WILL MARK BRAINLIEST Find the coordinates of the points of intersection of the graphs with coordinate axes: b y=−2x+4

Answer:

The 95% confidence interval for the standard deviation is (0.14, 0.54).

Step-by-step explanation:

The complete data and question is:

Sloth CW Ratios ; {1.5 , 1.09 , 0.98 , 1.42 , 1.49 , 1.25}

The 95% confidence interval for the standard deviation of this data is  < σ <   (two decimals - include the leading zero) .

Solution:

Compute the sample standard deviation as follows:

[tex]\bar x=\frac{1}{n}\sum x=\frac{1}{6}\times 7.73=1.2883\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{6-1}\times 0.2387}=0.2185[/tex]

The (1 - α)% confidence interval for the variance is:

[tex]CI=\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2}}<\sigma^{2}<\frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2}}[/tex]

Confidence level = 95%

⇒ α = 0.05

The degrees of freedom is,

df = n - 1 = 6 - 1 = 5

Compute the critical values of Chi-square:

[tex]\chi^{2}_{\alpha/2, (n-1)}=\chi^{2}_{0.025,5}=12.833\\\\\chi^{2}_{1-\alpha/2, (n-1)}=\chi^{2}_{0.975,5}=0.831[/tex]

*Use a Chi-square table.

Compute the 95% confidence interval for the variance as follows:

[tex]CI=\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2}}<\sigma^{2}<\frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2}}[/tex]

     [tex]=\frac{5\times (0.2185)^{2}}{12.833}<\sigma^{2}<\frac{5\times (0.2185)^{2}}{0.831}\\\\=0.0186<\sigma^{2}<0.2873\\\\=\sqrt{0.0186}<\sigma<\sqrt{0.2873}\\\\=0.1364<\sigma<0.5360\\\\\approx 0.14<\sigma<0.54[/tex]

Thus, the 95% confidence interval for the standard deviation is (0.14, 0.54).

Answer:

Kindly check explanation

Step-by-step explanation:

Assuming a normal distribution :

Sample (x) :25.5, 26.1, 26.8, 23.2, 24.2, 28.4, 25.0, 27.8, 27.3, 25.7

Null hypothesis : μ = 25

Alternative hypothesis : μ > 25

α = 0.05

Decision region :

Reject Null if :

t0 > t

t can be obtained from the t distribution table at : df = (n - 1) = 10 - 1 = 9 ; α = 0.05

Hence, t(0.05, 9) = 1.833

From the sample given ; t0

t0 = (m - μ) / (s /√n)

n = sample size = 10

s = sample standard deviation

m = sample mean

Using calculator :

25.5, 26.1, 26.8, 23.2, 24.2, 28.4, 25.0, 27.8, 27.3, 25.7

Sample mean(m) = 26

Sample standard deviation (s) = 1.624

t0 = (26 - 25) / (1.624 /√10) = 1.947

1.947 > 1.833

Hence, reject Null

B)

Confidence interval at 90% ; α = 0.1

m ± t(0.1/2 ; 9) * s/√n

m - t * s/√n ≤ μ ≤ m + t * s/√n

26 - 1.833 * (1.624/√10) ≤ μ ≤ 26 + 1.833 * (1.624/√10)

25.059 ≤ μ ≤ 26.941

Answer:

2

Step-by-step explanation:

Answer:

1 is 125, 2 is 175, 3 is 225, 4 is 275.

Step-by-step explanation:

50 for one hour plus 75.

50+75=125

50+50+75= 175

50+50+50+75=225

50+50+50+50+75=275.

Answer:

The answer is 696 ft.

Step-by-step explanation:

When you multiply the formula (LxW) you get the answer to the equation.

Answer:

696 ft

Step-by-step explanation: Multiply both of them :D

Answer:

I got D. 20

Step-by-step explanation:

-5/3 times -2/3 equals 10/9

10/9 times -18 equals -20

Hope this helps dude ^-^

Answer:  The first number is 30.

The second number is 120.

The third number is 130

Step-by-step explanation:

x + 4x + x+ 100 = 280

6x = 280-100

6x= 180

x = 30

Answer:

The type of transformation is translation and the change can be described as a translation of 5 to the right.

Answer:

There is no constant slope. I hope this helps!

Answer:

-3

Step-by-step explanation:

You can use the slop formula--

22-1 divided by 8-1 = 21/7 = 3

You can check by using any other two points and see if you get the same answer.

Hope this helps!

Answer:

j = 21 and n = 14

Step-by-step explanation:

we have the equations:

6j + n/3 = 134

j/3 + n = 31

54j + 3n = 1206

j + 3n = 93

53j = 1113

j = 21

(21)/3 + n = 31

7 + n = 31

n = 14

Answer with step-by-step explanation:

3/4 converted into 8ths is 6/8. When you add up 6/8 + 7/8, you end up with the answer of 13/8

Hope this was helpful! (brainliest please)

Answer:

Step-by-step explanation:

3/4 + 7/8

Make them have common denominators:

3/4 = 6/8

so...

6/8 + 7/8 = 13/8

Answer:

m22 answer will be in your book only

Answer:

the values of angle;

a=61

b=61

c=29

Answer: All of the angles combined are 180 degrees. Since b and its adjacent angle is 90 degrees, you would subtract 90-29, which gives you 61. b=61. You would then use both angle measures to determine the other two. You would need to find two values that add up to 90 degrees for c and a. Angle b+c would be equal to 90 degrees, and angle a and d (I used d to represent the 29 degree angle) would be equal to 90 degrees, equaling a total of 180 degrees. Angle a would be equal to 61, and angle c would be equal to 29. Hope this helps.

Answer:

-26

Step-by-step explanation:

Answer:

x-intercept (-7.5, 0)

y-intercept (0, 5.5)

Hope this helps!

Answer:

4 tickets

Step-by-step explanation:

1. make an equation representing the situation. x is the number of how many tickets you buy

  13.5x + 19.95 = 75

2. subtract 19.95 from both sides

  13.5x = 55.05

3. divide by 13.5 on both sides

  x = 4.08

now, you can't buy 0.08 of a ticket, so you have to round to the nearest whole number, which in this case is 4.

Answer:

4 tickets

Step-by-step explanation:.

13.5x + 19.95 = 75

13.5x  = 55.05

x  = 4.08

Now, you have to round to the nearest whole number, which in this case is 4.

Answer:

6.68181818182

Step-by-step explanation:

Answer:

3w+2w= 10

5w= 10

w = 10/5

w = 2

Answer:

w = 2

Step-by-step explanation:

3w+2w= 10

Combine like terms

5w = 10

Divide each side by 5

5w/5 = 10/5

w = 2

Thus the required number of male and female students are 9 and 31 respectively.

Mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,

here,
Let the number of male students is x and the number of female students be y,
According to the question,

x + y = 40
x = 40 - y ----- (1)
Now,
again from the question,

5y = 3x + 128
3x = 5y - 128
from equation 1
3 (40 - y) = 5y -128
120 - 3y = 5y - 128
120 + 128 = 8y
8y = 248
y = 31
Now,
From equation 1
x = 40 - y
x = 40 - 31
x = 9

Thus the required number of male and female students are 9 and 31 respectively.

Learn more about arithmetic here:

brainly.com/question/14753192

#SPJ2

The meters of tape left in the roll will be equal to 1/5 meters.

The four basic operations of arithmetic can be used to add, subtract, multiply, or divide two or even more quantities.

They cover topics like the study of integers and the order of operations, which are relevant to all other areas of mathematics including algebra, data processing, and geometry.

As per the information given in the question,

The total length of Tape = 5 m

Total number of pieces = 6

Length of each piece = 4/5 m

Then, the total length of the pieces will be,

6 × 4/5

= 24/5

Then, the amount of tape left in the roll will be,

= 5 - 24/5

= (25 - 24)/5

= 1/5

To know more about arithmetic operations:

https://brainly.com/question/13585407

#SPJ2

Answer:

1. x = -3/2 y+ 1/2z - 2

2. x = -2/3y + -2/3z + 14/3

3. x = 3z - 13

Step-by-step explanation:

solve for x

Answer:

I wish I've known, but try using Symbo-Lab or Math-Way. They help a lot.

Step-by-step explanation:

Answer:

john has a 6 out of 10 chance of picking a pencil

Answer:

P=37.5%

Step-by-step explanation:

Frequentist Probability

The probability of an outcome is defined as the frequency of the number of times the outcome occurs relative to the number of times that it could have occurred.

The equation to calculate the probability is:

[tex]\displaystyle P=\frac{f}{n}[/tex]

Where f is the number of favorable cases and n is the total cases.

John has in a cup of his desk:

6 pencils

3 blue+5 black+2 red pens=10 pens

Picking one of the utensils from the cup can be done in 16 different ways. That is the total number of cases n=16

The outcome of taking a pencil can be done in 6 ways. That is the number of favorable cases. f=6.

The probability is:

[tex]\displaystyle P=\frac{6}{16}[/tex]

Simplifying:

[tex]\displaystyle P=\frac{3}{8}[/tex]

Or expressed as a percentage:

P=3/8*100%

P=37.5%

Answer:  [tex][5, \infty)[/tex]

On a keyboard, you would write [5, infinity)

The square bracket means "include this value" and a curved parenthesis means "exclude this value". We cannot include infinity as it is not a number, so we always use parenthesis with either infinity.

[tex]y \ge 5[/tex] is the same as [tex]5 \le y[/tex] which is also the same as [tex]5 \le y < \infty[/tex] which may help lead to set up the interval notation answer.

Answer:

Answer

Ammmm did u just gave free points

Answer:

1. 63 or

2. 37.8

step-by-step explanation:

1. $125,$78, $66, $45, $13 take out $125 and $13 then add $78, $66, $45 and you get $189 then divided by 3 and you $63

2.$125,$78, $66, $45, $13 take out $125 and $13 then add $78, $66, $45 and you get $189 then divided by 5 and you $37.8

Answer:

ITS 63

Step-by-step explanation:

JUST DID DA TEST CUZ

Answer:

Rebecca is 18

Step-by-step explanation:

18/6-3=0

Answer:

3/7

Step-by-step explanation:

15 divided by 5 = 3

35 divided by 5 = 7

hope this helps