Help, due tonight at midgnight!

(a) The function g(x) = -8[tex]x^2[/tex] + 5x - 2 doesn't have two x-intercepts because ac > 0.

(b) The function h(x) = (-1/3)[tex]x^2[/tex] + 3x doesn't have two x-intercepts because ac = 0.

(c) The function k(x) = 8[tex]x^2[/tex] - 5x - 7 have two x-intercepts because ac < 0.

In the theorem, a, b, and c are real numbers.

Theorem - If f is a quadratic function of the form f(x) = a[tex]x^2[/tex] + bx + c and ac < 0, then the function f has two x-intercepts.

(a) The function is g(x) = -8[tex]x^2[/tex] + 5x - 2

On comparing the equation by f(x) = a[tex]x^2[/tex] + bx + c, we get a = -8, b = 5 and c = -2.

To check the two x-intercepts, we put values in ac and compare with ac<0

ac = (-8)(-2)

ac = 16 > 0

As the value of ac is greater than 0. So we can say that it doesn't have two x-intercepts.

(b) The function is h(x) = (-1/3)[tex]x^2[/tex] + 3x

On comparing the equation by f(x) = a[tex]x^2[/tex] + bx + c, we get a = -1/3, b = 3 and c = 0.

To check the two x-intercepts, we put values in ac and compare with ac<0

ac = (-1/3)(0)

ac = 0 = 0

As the value of ac is equal to 0. So we can say that it doesn't have two x-intercepts.

(c) The function is k(x) = 8[tex]x^2[/tex] - 5x - 7

On comparing the equation by f(x) = a[tex]x^2[/tex] + bx + c, we get a = 8, b = -5 and c = -7.

To check the two x-intercepts, we put values in ac and compare with ac<0

ac = 8(-7)

ac = -56

ac < 0

As the value of ac is less than 0. So we can say that it have two x-intercepts.

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The missing side of the triangle is known as the hypotenuse. The length of the missing side is 13.

What is a right triangle?

A right triangle, also known as a right-angled triangle, right-perpendicular triangle, orthogonal triangle, or formerly rectangled triangle, is a triangle with one right angle, or two perpendicular sides. The foundation of trigonometry is the relationship between the sides and other angles of the right triangle.

A right triangle has two legs and one hypotenuse.

The length of the legs is 5 and 12.

The sum of the square of the legs is equal to the square of the hypotenuse.

Therefore,

Hypotenuse² = 5²+ 12²

Hypotenuse² = 25+ 144

Hypotenuse² = 169

Hypotenuse = 13

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The function is best represented by f (x) = x² + 2x.

option C is the correct answer.

The values of x in the given function can be determined as follows;

From one of the solution of x = - 2 and the second solution = 0

Now, we already know that the function has no y intercept, so we will eliminate option A,  and B because they have values for y intercept.

Since one of the solutions of x, is negative 2, we will consider a function with positive equation.

f (x) = x² + 2x

solve for x;

x ( x + 2 ) = 0

x = 0  or  x + 2 = 0

x = 0 or - 2

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Divide the length of the longest side of triangle AFB by the longest side of triangle DHG to find the scale factor.

Triangle AFB: A=4 cm, B=5 cm, F=7 cm

Triangle DHG: D=2.8 cm, H=3.5 cm, G=4.9 cm

Scale factor = 7/4.9 = 1.43

Step by explanation

Step 1: Draw triangle AFB on a piece of paper.

Step 2: Measure the side lengths of triangle AFB and record them.

Step 3: Draw a second triangle, DHG, on the paper.

Step 4: Measure the side lengths of triangle DHG and record them.

Step 5: Divide the length of the longest side of triangle AFB by the longest side of triangle DHG to find the scale factor.

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Answer:

2.1 seconds

Step-by-step explanation:

Note we are told that d = -2x² + 10, where d is distance (in feet) and x is time (in seconds).

After how many seconds is the skateboarder 1 ft from the bottom of the hill? => What is x when d=1?

To do this, sub 1 in for d and solve for x:

d = -2x² + 10

1 = -2x² + 10

-9 = -2x²

4.5 = x²

x = [tex]\sqrt{4.5}[/tex] ≈ 2.12132

A. The slope of the line is 40

B. The equation of the line is 40x - y + 600 = 0

C. The equation is g(x) = 4x + 600        

The balance is 628 Rs.

The formula of the slope of line = Δy/Δx

                                             = 720 - 600 / 3 - 0

                                             = 120/3

                                             = 40

The equation of a line is given as y - y₁ = m(x - x₁)

m = 40 which is the slope.

When we substitute we have

y - 600 = 40(x - 0)

We have to substitute x as 0

y - 600 = 0

y = 600

therefore y = 40x + 600

This implies that 40x - y + 600 = 0

c.  y - 600 = 40x    

g(x) - 600 = 4x

hence

g(x) = 4x + 600        

d. x is 7 days

g(x) = 4*7 + 600

      = 628

The balance in the bank after 7 days is 628Rs.              

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The complete question is:

The table of values represents a linear function g(x), where x is the number of days that have passed and g(x) is the balance in the bank account:

x g(x)

0 $600

3 $720

6 $840

Part A: Find and interpret the slope of the function. (3 points)

Part B: Write the equation of the line in point-slope, slope-intercept, and standard forms. (3 points)

Part C: Write the equation of the line using function notation. (2 points)

Part D: What is the balance in the bank account after 7 days? (2 points)

9³ⁿ - 5³ⁿ will not be divisible by 2ⁿ for any positive integer value of n.

The expression 9³ⁿ - 5³ⁿ is divisible by 2ⁿ if and only if 9³ⁿ and 5³ⁿ have the same number of factors of 2. In order to check this, we can write 9³ and 5³ as powers of 2:

9³ = 729 = 9² × 9 = (3²)² × 3² = (2² × 3)² × 3²

5³ = 125 = 5² × 5 = (5²)²

Since 9³ has three more factors of 2 than 5³, 9³ⁿ - 5³ⁿ will not be divisible by 2ⁿ for any positive integer value of n.

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The fundamental colours of red, blue, and yellow, as well as orange, purple, and green, are most frequently present on six dice.

Six dice most likely have the primary colours of red, blue, and yellow as well as orange, purple, and green.

Despite the possibility of black and white, unseen hues are highly improbable: the infrared and ultraviolet

Each dice has 6 possible results, numbered from 1 to 6. There are only the possible outcomes of 1, 2, 3, 4,5, or 6.

On each die, a 5 has a 1/6 chance. divided by the total number of possible outcomes, by one way to achieve a five.

The likelihood of all 6 having is 1/6^5s

About 0.00002 is equal to 5 = 1/6 x 1/6 x 1/6 x 1/6.

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The probability that not more than 5 graduates plan to pursue a graduate degree is 0.0191.

Given Information

Percentage of college graduates that plan on pursuing a graduate degree=50%

Number of graduates selected=14

Let us consider the event that a college graduate plans on pursuing a graduate degree as a success.

The probability of getting success is p = 0.50

Let X denotes the event of success.

We have, n = 14.

Then,

X∼Bin(14,0.50).

The pmf of X is given as,

[tex]P(X)= ^nC_xP^x(1-P)^n^-^x\\\\P(X)= ^1^4C_x(0.50)^x(0.50)^1^4^-^x[/tex]

The probability that not more than 5 graduates plan to pursue a graduate degree can be computed as,

P(X≤5)=5∑¹⁴Cₓ(0.50)x(0.50)¹⁴⁻ˣ

=0+0.00001+0.00012+0.00081+0.00396+0.01425

P(X≤5)=0.01914

Hence, the probability that not more than 5 graduates plan to pursue a graduate degree is 0.0191.

The probability that exactly 7 of the college graduates plan to pursue a graduate degree can be computed as,

P(X=7)=¹⁴C₇(0.5)⁷(0.5)⁹

P(X=7)=0.08395

Therefore, the probability that exactly 7 of the college graduates plan to pursue a graduate degree is 0.0840.

The probability that at least 9 but not more than 14 of the college graduates plan to pursue a graduate degree can be computed as,

P(9≤X≤14)=14∑x=9 ¹⁴Cₓ(0.50)x(0.50)¹⁴⁻ˣ

P(9≤X≤14)=0.18889+0.19833+0.16227+0.10142+0.04681+0.01505

P(9≤X≤14)=0.71277

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The number of integrals required in the shell method is one or two, depending on the axis of rotation and the dimension of the solid of revolution.

The number of integrals required in the shell method depends on the dimension of the solid of revolution being generated. The shell method generates a solid of revolution by rotating a region about an axis.

For a solid of revolution generated by rotating a two-dimensional region about a vertical axis (i.e., a vertical shell), two integrals are required: one to find the volume of the shell and another to add up the volumes of all the shells to get the total volume of the solid.

For a solid of revolution generated by rotating a two-dimensional region about a horizontal axis (i.e., a horizontal shell), one integral is required to find the volume of the solid.

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The explanation of an even number is mentioned below

A number that is a multiple of two is said to be "even." Any integer that can be divided in half by two is considered to be an even number.

Explanation:

An illustration will enable you to understand this.

Let's say John has six balls.

He can couple up all 6 balls and create 3 pairs if he attempts to organize them.

There are no unpaired balls remaining.

He can thus deduce that 6 is an even number.

Let's split 6 by 2 now.

The number of pairs that are created, 3, is the quotient that we arrive at. The number of balls that cannot be matched is equal to the remainder, which comes out to be 0.

Every time John attempts to pair

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only has one zero/root, and it's a quadratic, means that that only zero has a multiplicity of 2, namely is there twice, so

[tex]\begin{cases} x = -10 &\implies x +10=0\\ x = -10 &\implies x +10=0\\ \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{original~polynomial}{( x +10 )( x +10 ) = \stackrel{0}{h}}\implies x^2+20x+100=h[/tex]

The inequality is (a) lt - 10l ≤ 0.75

The range of acceptable weights is t ≥ 9.25 AND t ≤ 10.75.

The range of acceptable weights for a bag of potatoes can be found by writing an absolute value inequality as follows:

|w - 10| ≤ 0.75

Where

Expanding the absolute value:

-0.75 ≤ w - 10 ≤ 0.75

Solving for w:

9.25 ≤ w ≤ 10.75

The range of acceptable weights for a bag of potatoes is 9.25 to 10.75 pounds.

The number line is attached

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-15,9,13 are the quadratic equation values of a,b and c is 231.3.

The equation for the quadratic function is f(x) = a * x2 + b * x + c. The center figure, the one right next to the x, is the b-value. Both a and c are numbers, just like the other letters. Any number may be used for each of them. They provide information about the graph of the quadratic function when taken together.

Graphs, A quadratic function is one that has the formula f(x) = ax2 + bx + c, where a, b, and c are all integers with a not equal to zero. T

Our ability to solve any quadratic equation is aided by the quadratic formula. First, we change the equation's form to read as ax2+bx+c=0, where a, b, and c are the coefficients.

As a result, we enter these coefficients into the formula:

(-b(b2-4ac))/(2a).

(-b(b2-4ac))/(2a).

-9(9-4*-15*13)/2*-15

-9(9-780)/-30 = -9(-771)/-30 =6939/-30 = -231.3.            

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Complete question:

What are the values of a, b and c in the quadratic equation 9x² -15x + 13 = 0?

The probability that at most 23 tails occurs is 46/52.

Probability is a measure of how likely something is to occur. It is a branch of mathematics that studies the occurrence of random events. The value is between 0 and 1. Mathematics has incorporated probability to forecast the possibility of events happening. The probability of something happening is referred to as its likelihood. The probability distribution is based on this fundamental idea of probability. We must first identify the total number of possibilities in order to calculate the probability that a specific event will occur.

Probability that an event will occur P(E) is the proportion of favourable outcomes to all outcomes.

Now,

Total no. of times coin tossed=26

Total outcomes=26 × 2=52

the probability that at most 23 tails occur=1-probability that 24,25 and 26 tails occured

=1- × [tex]\frac{25}{52}[/tex] × [tex]\frac{26}{52}[/tex]

=1-15600/140608

=89/100≈46/52

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Yes, the solution to the system of linear equations represented by the matrix A lies in the plane spanned by the columns of A.

If the last row of the reduced matrix is [0, 0, 0, 0], it means that the system of linear equations represented by the matrix is consistent, but not necessarily unique. This is because the last row corresponds to an equation of the form 0 = 0, which is always true.

However, the presence of a non-zero row in the reduced matrix that corresponds to a non-trivial equation (i.e., an equation that is not of the form 0 = 0) is sufficient to guarantee that the solution exists and is unique, and that the solution lies in the plane spanned by the columns of A.

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The correct statement about the comparison between Manuel’s and Gretchen’s data is: Gretchen’s data values are more spread out than Manuel’s data values because the mean and median and interquartile range mean and standard deviation and interquartile range are larger for Gretchen's data than for Manuel’s data.

The interquartile range is a measure of statistical dispersion, or the spread of the data, in descriptive statistics.

The middle 50%, fourth spread, or H-spread are further names for the IQR. It is described as the spread between the data's 75th and 25th percentiles.

Hence, from the data gotten from both Manuel and Gretchen shows differences in them.

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The solution of the linear equation, 4·x - 37 = 2·x + 7, found using the collection of like terms, is; x = 22

A linear equation is an equation of the form, y = m·x + c, that has the highest index or power of one (1), and for which the graph of the equation is a straight line.

The expressions, 4·x - 37 and 2·x + 7 are linear expressions
Whereby the equation is 4·x - 37 = 2·x + 7, we get;

4·x - 37 = 2·x + 7

Collecting like terms, produces

4·x - 2·x = 7 + 37 = 44

2·x = 44

Dividing both sides by 2, we get;

2·x/2 = x = 44/2 = 22

x = 22

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A sample of 220 patients with sore throats is tested for a contagious virus (5% positive). The central limit theorem holds and the mean of the sample proportion is 5% with a standard deviation of 0.0096. The probability of 7.5-9% positive is 68.3%.

a) the population is all patients who come to the doctor's office with a sore throat. The parameter of interest is the proportion of patients with a contagious virus in the population. The value of the parameter is 5%.

b) the central limit theorem (CLT) holds for the sample proportion of patients with a contagious virus because the sample size of 220 patients is large enough (more than 30) and the sample is being drawn randomly from the population.

c) the mean of the sample proportion of patients with a sore throat who has the virus is 5% and the standard deviation of the sample proportion is √(0.05 * 0.95) / 220 = 0.0096.

d) the probability that between 7.5% and 9% of these 220 patients in the sample with a sore throat have the virus is approximately 68.3% (based on a normal distribution).

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A sample of 220 patients with sore throats is tested for a contagious virus (5% positive). The central limit theorem holds and the mean of the sample proportion is 5% with a standard deviation of 0.0096. The probability of 7.5-9% positive is 68.3%.

a) the population is all patients who come to the doctor's office with a sore throat. The parameter of interest is the proportion of patients with a contagious virus in the population. The value of the parameter is 5%.

b) the central limit theorem (CLT) holds for the sample proportion of patients with a contagious virus because the sample size of 220 patients is large enough (more than 30) and the sample is being drawn randomly from the population.

c) the mean of the sample proportion of patients with a sore throat who has the virus is 5% and the standard deviation of the sample proportion is √(0.05 * 0.95) / 220 = 0.0096.

d) the probability that between 7.5% and 9% of these 220 patients in the sample with a sore throat have the virus is approximately 68.3% (based on a normal distribution).

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The statement that is true about these functions at x = 3 is that a(3) = b(3).

At x = 3, the value of a(x) is equal to the value of b(x) because the lines representing the two functions intersect at x = 3. Therefore, a(3) = b(3).

The two functions shown, a(x) and b(x), intersect at x = 3. This means that the values of the two functions are equal at x = 3. Therefore, a(3) = b(3).

The two functions, a(x) and b(x), represent mathematical expressions that can be graphed on a coordinate plane. When two lines intersect, they meet at exactly one point. In this case, the lines representing the two functions intersect at x = 3. This means that the two functions have the same value at x = 3. Therefore, a(3) is equal to b(3), which can be mathematically expressed as a(3) = b(3). This is an important property of intersecting lines and is commonly used in mathematics, engineering, and other related fields. It provides a way to find the common value between two functions at a specific point.

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Answer:

wrong ?

Step-by-step explanation:

show us crycle or a picture man

Given that 120 is a number between 90 and 180, it is an obtuse angle. This angle's measurement is therefore 90º < 120º < 180º.

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Yes, w is in col(a) since w can be written as a linear equationof the columns in a. No, w is not in nul(a) since w cannot be written as a linear combination of the columns in a with all scalar coefficients being zero.

Yes, w is in col(a) since w can be written as a linear combination of the columns in a. A linear combination of two or more vectors is a vector that can be expressed as a sum of those vectors, with each vector scaled by a scalar (or coefficient). By expressing w as a linear combination of the columns in a, we are saying that w can be expressed as a sum of those columns, with each column scaled by a scalar.

No, w is not in nul(a) since w cannot be written as a linear combination of the columns in a with all scalar coefficients being zero. In other words, w cannot be expressed as a sum of the columns in a such that all coefficients are zero. This is the definition of nul(a): a subspace in which all linear combinations of the columns in a have a coefficient of zero. Since w cannot meet this requirement, then it is not in nul(a).

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Independent variable t is time given to read story, dependent variable y is test scores, relationship modeled as y = f(t).

What is variable ?

variable, In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation. Commonly used variables include x and y (real-number unknowns), z (complex-number unknowns), t (time), r (radius), and s (arc length).

Let's denote the amount of time given to read the story as t. The independent variable t has three levels: t = 10 minutes, t = 15 minutes, and t = 20 minutes.

The dependent variable y is the test scores on the content of the story. The purpose of the study is to determine the relationship between the independent variable t and the dependent variable y.

The problem can be mathematically represented as:

y = f(t)

where f is a function that represents the relationship between the independent variable t and the dependent variable y.

Independent variable t is time given to read story, dependent variable y is test scores, relationship modeled as y = f(t).

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Independent variable t is time given to read story, dependent variable y is test scores, relationship modeled as y = f(t).

variable, In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation. Commonly used variables include x and y (real-number unknowns), z (complex-number unknowns), t (time), r (radius), and s (arc length).

Let's denote the amount of time given to read the story as t. The independent variable t has three levels: t = 10 minutes, t = 15 minutes, and t = 20 minutes.

The dependent variable y is the test scores on the content of the story. The purpose of the study is to determine the relationship between the independent variable t and the dependent variable y.

The problem can be mathematically represented as:

y = f(t)

where f is a function that represents the relationship between the independent variable t and the dependent variable y.

Independent variable t is time given to read story, dependent variable y is test scores, relationship modeled as y = f(t).

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The mean and the meaning is

The mean is a measure of central tendency that gives us the average value of a set of numbers.

To calculate the mean of the distances that the ball was thrown, we add up all the values and divide by the number of values. In this case, the mean is calculated as:

= (2.0 + 2.1 + 2.3 + 3.1 + 3.1 + 3.5 + 4.1 + 4.3 + 4.4 + 5.0 + 5.8 + 6.2) / 12

= 45.9 / 12

= 3.825

This value of 3.825 feet tells us that on average, the ball was thrown a distance of approximately 3.825 feet. This value gives us an idea of what a typical throw of the ball looks like, and can help us understand the distribution of the data.

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The car salesperson made $62,000 in sales for the month

Let us say the amount of sales the car salesperson made in a month is x. Then, the total income can be represented as:

$1,400 + 0.05x = $4,500

The equation represents the total income of the car salesperson as the base salary of $1,400 per month plus a commission of 5% on sales. To find the amount of sales made, we have to solve x.

Subtracting $1,400 from both sides:

0.05x = $4,500 - $1,400 = $3,100

Dividing both sides by 0.05:

x = $3,100 / 0.05 = $62,000

So the car salesperson made $62,000 in sales for the month.

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Dividing the sum of `(-12)/(5) and (-18)/(15)` by their difference. The answer is 3.

To divide the sum of two numbers by their difference, we first need to find the sum and the difference of the two numbers.

The sum of (-12)/(5) and (-18)/(15) is:

(-12)/(5) + (-18)/(15) = (-12)/(5) + (-6)/(5) = -18/5

The difference of (-12)/(5) and (-18)/(15) is:

(-12)/(5) - (-18)/(15) = (-12)/(5) - (-6)/(5) = -6/5

Finally, dividing the sum by the difference, we get:

(-18/5) / (-6/5) = -18/-6 = 3

So, the answer is 3.

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The dot product of u and v is -64. The distance between u and v is 16.

The dot product of two vectors u and v is calculated by multiplying the corresponding components of each vector and then summing the results. Therefore, the dot product of u and v is:

u•v = (−3)(9) + (10)(−5) + (9)(7) = −27 − 50 + 63 = −64

The distance between two vectors u and v is calculated by taking the square root of the dot product of the two vectors. Therefore, the distance between u and v is:

Distance(u,v) = √(u•v) = √(−64) = 16

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The measure of angle 2 from the given figure is 90°.

Angles in parallel lines are angles that are created when two parallel lines are intersected by another line called a transversal.

Given that, c is perpendicular to b.

Sice, c⊥b angles formed with lines c and b are equal to 90°.

Now, m∠2=90°

Therefore, the measure of angle 2 from the given figure is 90°.

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Step-by-step explanation:

25 cents = $0.25

the ratio is 5/0.25 (5 dates for $0.25)

now we need to convert this to $5 in the denominator. and we need to multiply the numerator with the same factor.

and then the numerator will tell us how many dates we get for $5 in the denominator.

0.25 × x = 5

x = 5/0.25 = 20

indeed, 20 quarters = $5

so, we do

5/0.25 × 20/20 = 100/5

that means we can buy 100 dates for $5.

Blinding refers to nondisclosure of the treatment an experimental unit is receiving

What is Non discloure Treatment?

Medical NDAs are written agreements in which a patient agrees not to post negative reviews of a medical professional on the internet. Medical NDAs, like any other type of contract, vary widely.

Concept:

Blinding is the practice of not disclosing the treatment that an experimental unit is getting. A single-blind experiment is one in which the experimental unit (or subject) is unaware of the therapy being administered.

A single-blind experiment is one in which the experimental unit (or subject) is unaware of the therapy being administered.

A double-blind experiment is one in which neither the experimental unit nor the researcher who comes into touch with it knows which treatment it is receiving.

Blinding is the practice of not disclosing the treatment that an experimental unit is getting.

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Blinding refers to nondisclosure of the treatment an experimental unit is receiving

What is Nondisclosure Treatment?

Medical NDAs are written agreements in which a patient agrees not to post negative reviews of a medical professional on the internet. Medical NDAs, like any other type of contract, vary widely.

Concept:

Blinding is the practice of not disclosing the treatment that an experimental unit is getting. A single-blind experiment is one in which the experimental unit (or subject) is unaware of the therapy being administered.

A single-blind experiment is one in which the experimental unit (or subject) is unaware of the therapy being administered.

A double-blind experiment is one in which neither the experimental unit nor the researcher who comes into touch with it knows which treatment it is receiving.

Blinding is the practice of not disclosing the treatment that an experimental unit is getting.

To learn more About Non-Disclosure Treatment visit:

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