A survey of 2690 musicians showed that 368 of them are left-handed. Find a point estimate for p, the population proportion of musicians that are left-handed.

Answers

Answer 1

Answer: 0.137.

Step-by-step explanation:

Let p be the population proportion of musicians that are left-handed.

Given: Sample size : n= 2690   [subset of population]

Number of musicians that are left-handed: x= 368

Then the sample proportion: [tex]\hat{p}=\dfrac{368}{2690}\approx0.137[/tex]

Since sample proportion is the best point estimate of the population proportion.

Hence, a point estimate for p, the population proportion of musicians that are left-handed is 0.137.


Related Questions

The graph shows the relationship between the height of a tree and its age in years. What is the unit rate of growth for the tree? 0.25 feet per year 0.5 feet per year 2 feet per year 3 feet per year

Answers

Answer:

The unit rate is 2 feet per year

Step-by-step explanation:

The graph is missing (See attachment)

To determine the unit growth;

First, we have to pick any two corresponding on the x and y axis

When x = 5; y = 10

When x = 1; y = 2

These can be represented as;

[tex](x_1,y_1) = (5,10)[/tex]

[tex](x_2,y_2) = (1,2)[/tex]

Next, is to determine the slope using;

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

Substitute values for x and y

[tex]m = \frac{2 - 10}{1 - 5}[/tex]

[tex]m = \frac{-8}{-4}[/tex]

[tex]m = 2[/tex]

Hence, the unit rate is 2 feet per year

Answer:

the unit rate is 2ft per year i got 100% on a quiz for this


what’s the answer choice?

Answers

Answer:

[tex]\huge\boxed{Option \ A}[/tex]

Step-by-step explanation:

a) 11 + 2x

[More than => Addition, Sum]

b) [tex]\frac{5}{x} - 2[/tex]

[Quotient => Division, Less than => Subtraction ]

c) 4(x+8)

[Product => Multiplication and it says that there are two terms to be multiplied]

1 => 4 and 2 => (x+8)

Where they are multiplied, they are written as:

=> 4(x+8)

math ... answer meeee

Answers

You need to find the GCF (greatest common factor) of 45 and 90, which is 45.

45 times ? gets you 45

? would be 1

45 times 1 equals 45.

45 times ? gets you 90

? would be 2

45 times 2 equals 90

45(1+2) = 45+90 = 135

♡ Hope this helps! ♡

❀ 0ranges ❀

Answer:

45(1 + 2)

Step-by-step explanation:

To find the greatest common factor, we find the multiples of 45 and 90.

45: 1, 3, 5, 9, 15, 45

90: 1, 2, 3, 5, 6, 9, 15, 18, 45...

The easier way to do this is divide 90 by 2 to get our GCF, 45.

We place the 45 (GCF) in the first box and we place 1 and 2 in the parentheses because when you distribute, we get our original answer.

45(1 + 2)

Use the distance formula to find the distance between point A(-5, 4) and point B(7, -5)

Answers

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{15 \: units}}}}}[/tex]

Step-by-step explanation:

Given,

A( -5 , 4 )⇒ ( x₁ , y₁ )

B ( 7 , -5 )⇒ ( x₂ , y₂ )

Finding distance between these two points

[tex] { \boxed{ \sf {{ distance = \sqrt{ {(x2 - x1)}^{2} + {(y2 - y1)}^{2}}}}}}[/tex]

plug the values

[tex] \sf{ = \sqrt{ {(7 - ( - 5))}^{2} + {( - 5 - 4)}^{2} } }[/tex]

[tex] \sf{ = \sqrt{ {(7 + 5)}^{2} + {( - 5 - 4)}^{2} } }[/tex]

Calculate the sum

[tex] \sf{ = \sqrt{ {12}^{2} + {( - 9)}^{2} } }[/tex]

Evaluate the power

[tex] \sf{ = \sqrt{144 + 81} }[/tex]

Add the numbers

[tex] \sf{ = \sqrt{ 225} }[/tex]

Calculate

[tex] \sf{ = 15 \: units}[/tex]

Hope I helped!

Best regards!!

Jordan drives to the store at 30 miles per hour. On her way home she averages only 20 miles per hour. If the total rime takes half an hour, how far does she live from the store?

Answers

Answer:

10 miles away

Step-by-step explanation:

If she travels at only 20 miles per hour, and half of one hour is 30 minutes, then you would divide the amount of miles (20) by 2 to get 10. I'm sorry this isn't the best explanation, but I hope you understand what I am trying to say :((

Which is an equivalent equation solved for t? t = t equals StartFraction f minus v Over a EndFraction z. t = t equals StartFraction f minus a Over v EndFraction z. t = a(f – v) t = v(f – a)

Answers

Answer:

[tex]t=\dfrac{f-v}{a}[/tex]

Step-by-step explanation:

The equation that represents the final velocity of an object is given by :

f=v+at ....(1)

v is initial velocity

a is acceleration rate

t is time

We need to solve the above equation for t.

Subtracting both sides of equation (1) by v

f-v=v-v+at

f-v=at

Dividing both sides of the above equation by a

[tex]\dfrac{f-v}{a}=\dfrac{at}{a}\\\\t=\dfrac{f-v}{a}[/tex]

So, the value of t is [tex]\dfrac{f-v}{a}[/tex].

Answer:

the answer is A

i am doing the assignment right now and i got it correct

Keisha spent a total of $52 at the grocery store. Of this amount, she spent $39 on fruit. What percentage of the total did she spend on fruit?

Answers

Answer:

75%

Step-by-step explanation:

Percentage of total spent on fruit = (39/52)×100%

= 0.75×100%

= 75%

The changing speed of a car is modeled by the function S(t) = –4t + 35, where t is time in seconds. Interpret the model.

Answers

Answer:

The car reaches a stop after 8.75 seconds have passed.

Step-by-step explanation:

Maggie earns money from working at the pet store and answering phones. She earns $10 each hour she works at the pet store and $0.25 for each phone call she answers. Maggie answered 60 phone calls and earned $115 last week.

Part A: Create an equation that will determine the number of hours she worked at the pet store. (3 points)

Part B: Solve this equation justifying each step with an algebraic property of equality. (6 points)

Part C: How many hours did Maggie work at the pet store last week? (1 point)

Answers

Answer:

11hr 20 phone calls

Step-by-step because Maggie earns money from working at the pet store and answering phones. She earns $10 each hour she works at the pet store and $0.25 for each phone call she answers. Maggie answered 60 phone calls and earned $115 last week.

What is X I need help i dont know how to do this

Answers

Answer:

x = 75

Step-by-step explanation:

Triangle BDH

The angle must add to 180 degrees

36+ 39 + DHB = 180

75 + DHB = 180

DBH = 180-75

DHB = 105

DBH + x = 180 since it is a straight line

105+ x = 180

x = 75

Anna was driving east on a freeway at a constant velocity. She was 570 kilometers west of
her exit. In 2 hours, she drove one-third of the way to her exit. What was her velocity?

Answers

Answer:

Her velocity is 95 km/hour

Step-by-step explanation:

The given information includes;

The direction to which Anna was driving = Eastward

Her initial location on the journey = 570 kilometres west of her her exit

The distance she drove in 2 hours = 1/3 of the way to her exit

Therefore, the distance she drove in 2 hours = 1/3×570 = 190 m

Her velocity = Her distance covered/(The time it take to cover the distance)

Which gives;

Her velocity = (190 km)/(2 hours) = 95 km/hour

Her velocity = 95 km/hour.

Write the equation of a line that passes a given point and has the given slope. Answer in standard form. 1. Point (-3,5), m = -7 2. Point (4,7), m = 0

Answers

Answer:

y -5 = -7(x +3)y = 7

Step-by-step explanation:

The point-slope form of the equation can be used for this. It is generally written as ...

  y -k = m(x -h) . . . . . line with slope m through point (h, k)

__

1. For m=-7, (h, k) = (-3, 5), the equation is ...

  y -5 = -7(x +3)

__

2. For m=0, (h, k) = (4, 7), the equation is ...

  y -7 = 0(x -4)

  y = 7

_____

Comment on the form of the answer

Since a point and slope are given, "the equation" is appropriately written in point-slope form. For the second problem the simplified version would be ...

  y -7 = 0

Sometimes, "the equation" means the answer is expected in slope-intercept form. In that case, a little rearranging is necessary for the first answer. It becomes ...

  y = -7x -16

There are perhaps a dozen different forms that a linear equation can be written in. Considering those, "the equation" is somewhat ambiguous. Your curriculum materials may offer a clue as to the form intended.

20+3(7+4)+5+2(7+9)?????

Answers

Answer:

90

Step-by-step explanation:

Be sure to use PEMDAS. Begin with parentheses, the move to multiplication, then adding.

20 + 3(7 + 4) + 5 + 2(7+9)

20 + 3(11) + 5 + 2(16)

20 + 33 + 5 + 32

You can add those final four numbers in any order you want, to get a sum of 90.

Answer:

Your answer will be 90

Step-by-step explanation

First you will have to answer what's inside the parentheses

7 + 4 = 11 , 7 + 9 = 16

Then you multiply what is next to the parentheses

3×11 = 33, 2×16 = 32

Finally you will have to add

20 + 33 =53

53 + 5 =58

58 + 32 = 90

The point is doing PEMDAS

P=Parentheses

E= Exponent

M= Multiplication

D= Division

A= Addition

S= Subtraction

Functions stuff. Picture attached. 30 points. thanks <3

Answers

Answer:

A

Step-by-step explanation:

So we have the function:

[tex]f(x)=\frac{3+x}{x-3}[/tex]

And we want to find:

[tex]f(a+2)[/tex]

To do so, substitute in (a+2) for x:

[tex]f(a+2)=\frac{3+(a+2)}{(a+2)-3}[/tex]

Simplify the numerator and denominator. Add 2 and 3 in the numerator. Subtract in the denominator:

[tex]f(a+2)=\frac{5+a}{a-1}[/tex]

The answer is A.

Answer:

[tex]\Large \boxed{\mathrm{A}}[/tex]

Step-by-step explanation:

[tex]\displaystyle f(x) = \frac{3+x}{x-3}[/tex]

For f(a + 2), the input for the function f(x) is (a + 2).

Replacing x with (a + 2).

[tex]\displaystyle f(a+2) = \frac{3+(a+2)}{(a+2)-3}[/tex]

Simplify the rational function.

[tex]\displaystyle f(a+2) = \frac{(3+2)+a}{a+(2-3)}[/tex]

[tex]\displaystyle f(a+2) = \frac{5+a}{a-1}[/tex]

can someone help me out ​

Answers

Answer:

its an INTEGER , a RATIONAL NUMBER and a REAL NUMBER

all are correct

hope it helps (✷‿✷)

tan(theta)=40/58 How do u solve? How do u isolate theta? show work plz!

Answers

Answer:

34.60°

Step-by-step explanation:

[tex] \tan \theta = \frac {40}{58}[/tex]

[tex] \tan \theta = 0.689655172[/tex]

[tex] \theta =\tan^{-1} 0.689655172[/tex]

[tex] \theta =34.592288671\degree [/tex]

[tex] \theta =34.60\degree [/tex]

Answer:

[tex]\Large \boxed{\theta = 34.59228868\°}[/tex]

Step-by-step explanation:

tan(θ) = 40/58

To isolate theta (unknown angle), we must take the inverse tangent of both the sides.

tan^-1(tan(θ)) = tan^-1(40/58)

The inverse tangent and tangent cancels.

Simplify the equation.

θ =  tan^-1(20/29)

θ = 34.59228868°

A picture has an area of 35cm and is 7cm long.An enlargement of the picture is made is 21cm long.Find the area of the enlargement​

Answers

Answer: The area of the enlargement is 315cm.

Step-by-step explanation:

If the picture has 35cm as the area and it has a length of 7cm  then we can find the width by dividing the area by the length.

w= 35/7

w =  5      

So in this care the width of the picture in 5cm.

Now is saying that the picture's length has been enlarge or been dilated to 21 cm. To get from 7cm to 21cm you will have to multiply  by 3.  

In this situation, we will have to multiply the original picture's width by 3 to find it enlargement.

w= 5*3 = 15  

The width is 15cm and the length is 21cm so multiply them to find the area.

A = 15 * 21

A = 315cm

I need the answers... Help please

Answers

Answer:The members of AUB={1,2,3,4,5,6,7,9}

The members of one possible set C ={4,5,8,10}

What is the answer?

Answers

The answer is 11 if you plugged the values into the variables and solved

OMG OMG OMG PLEASE HELP!!!!!!!!!!!

Answers

The answer for that is c

Answer:

C

Step-by-step explanation:

[tex]\frac{3-\sqrt{3} }{3+\sqrt{3} } *\frac{3-\sqrt{3} }{3-\sqrt{3} } \\\\=\frac{(3-\sqrt{3})^{2} }{(3+\sqrt{3} )(3-\sqrt{3} )} \\\\=\frac{9-2*3\sqrt{3}+3 }{9-3}\\\\=\frac{12-6\sqrt{3} }{6} \\\\=2-\sqrt{3}[/tex]

Write down the value of the digit 5 in 75389 write your answer in words.

Answers

Answer:

It's very easy mate!

Step-by-step explanation:

Ninty eight thousand seven hundred fifty three

that is 98753 in no.s

●✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎❀✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎●

Hi my lil bunny!

❧⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯☙

               [tex]\boxed{98753 }[/tex]    

In word form = Ninety eight thousand seven hundred fifty three

In Number form.= 98753

❧⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯☙

●✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎❀✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎✴︎●

Have a great day/night!

❀*May*❀

What is the volume of the following prism?
A. 96 in³
B. 480 in³
C. 48 in³
D. 108 in³

Answers

Answer:

C

Step-by-step explanation:

To find the volume, we can multiply the area of the base by the height. The base is a triangle so its area is (4 * 3) / 2 = 6 and the height is 8 so the volume is 6 * 8 = 48 in³.

Answer:

C.  Vol = 48 in³

Step-by-step explanation:

Vol = base area of a triangle x height.

Vol = ( 1/2 * 3 * 4 ) x 8

Vol = 48 in³

Solve n/3 = 16
Please help :)

Answers

Step-by-step explanation:

To solve for n, we need to isolate the variable n.

Multiply both sides of the equation by 3 to cancel out the 3 on the left side, and multiply 3 by 16 to get our final answer.

[tex]\frac{n}{3}*3=n\\16*3=48[/tex]

Our final answer: n = 48

If g(x)= x^2-2x-6 and h(x)= 2x^2-5x+2 find (h-g) (-2)

Answers

Answer:

[tex](h - g)( - 2) = 18[/tex]

Step-by-step explanation:

g(x) = x² - 2x - 6

h(x) = 2x² - 5x + 2

To find (h-g) (-2) we must first find h - g(x)

To find h - g(x) subtract g(x) from h(x)

We have

[tex](h - g)(x) = {2x}^{2} - 5x + 2 - ( {x}^{2} - 2x - 6) \\ = {2x}^{2} - 5x + 2 - {x}^{2} + 2x + 6 \\ = {2x}^{2} - {x}^{2} - 5x + 2x + 2 + 6[/tex][tex](h - g)(x) = {x}^{2} - 3x + 8[/tex]

To find (h-g) (-2) substitute the value of x that's - 2 into (h - g)(x) that's replace every x in (h - g)(x) by - 2

That's

[tex](h - g)( - 2) = ({ - 2})^{2} - 3( - 2) + 8 \\ = 4 + 6 + 8 \\ = 10 + 8[/tex]

We have the final answer as

[tex](h - g)( - 2) = 18[/tex]

Hope this helps you

Select the correct answer.
Which of the following represents a coefficient from the expression given?
9x - 20 + x2
9
O
20
O
х
x2
What is it ?

Answers

9 would be a coefficient since it is a number in-front of a variable

Answer:

9

Step-by-step explanation:

edmentum

If you're good at math i'd love some help :)

Answers

Answer:

x = 10     x = -2

Step-by-step explanation:

(x-4)^2 -28 = 8

This is a parabola on the left and a constant line on the right.  The parabola will cross the line twice, so there will be two solutions

see attached

Add 28 to each side

(x-4)^2 -28+28 = 8+28

(x-4)^2  = 36

Take the square root of each side

sqrt((x-4)^2) = ±sqrt(36)

x-4 = = ±6

Add 4 to each side

x-4+4 = 4±6

x = 4+6    x = 4-6

x = 10     x = -2

Answer:

x = 10, and x = - 2

Step-by-step explanation:

This equation has two solutions, as it resembles a quadratic equation. When graphed it will be a parabola, and hence intersects the x - intercept at two points, giving us two solutions.

Let's start by expanding the equation,

(x - 4)² - 28 = 8,

(x - 4)² = 28 + 8,

(x - 4)² = 36,

x - 4 = √36, and x - 4 = - √36

x - 4 = 6, and x - 4 = - 6

Solution(s) : x = 10, and x = - 2

18 divided by 3-7+2x5
Please help!!!

Answers

The answer is to 18/3-7+2 x 5 is 3

Equivalent expressions are expressions that have the same values.

The result of [tex]\frac{18}{3} - 7 + 2 \times 5[/tex] is 9

The expression is represented as:

[tex]\frac{18}{3} - 7 + 2 \times 5[/tex]

Using BODMAS, we start by dividing 18 by 3

[tex]\frac{18}{3} - 7 + 2 \times 5 = 6 - 7 + 2 \times 5[/tex]

Evaluate the products of 2 and 5

[tex]\frac{18}{3} - 7 + 2 \times 5 = 6 - 7 + 10[/tex]

Evaluate the sum of -7 and 10

[tex]\frac{18}{3} - 7 + 2 \times 5 = 6 + 3[/tex]

Evaluate the sum of 6 and 3

[tex]\frac{18}{3} - 7 + 2 \times 5 = 9[/tex]

Hence, the result of [tex]\frac{18}{3} - 7 + 2 \times 5[/tex] is 9

Read more about equivalent expressions at:

https://brainly.com/question/2972832

Select ALL the correct answers.
Select all of the equations with a solution

Answers

Answer:

B, C

Step-by-step explanation:

Plug in the x value for each x, and solve. Make sure that the two sides are equal to one another before verifying that it is true.

5 students participated in a push-up competition.
The amount of push-ups each student completed is listed: 12, 7, 10, 11,5
What was the mean number of push-ups?

Answers

Answer: 9

Step-by-step explanation:

Formula : Mean = [tex]\dfrac{\text{Sum of observations}}{\text{Number of observaions}}[/tex]

Given: 5 students participated in a push-up competition.

The amount of push-ups each student completed is listed: 12, 7, 10, 11,5.

Mean = [tex]\dfrac{12+7+10+77+5}{5}[/tex]

[tex]=\dfrac{45}{5}=9[/tex]

Hence, the mean number of push-ups = 9

Someone help me pleaseeeee!!

Answers

Answer:

Answer is attached below :)

(It's the 4th option)

(❁´◡`❁)

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