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IrinaK [193]
2 years ago
13

Suppose you were to draw all possible samples of size 36 from a large population with a mean of 650 and a standard deviation of

24. You then compute the sample mean x-bar for each sample. From the long list of sample means, you create the sampling distribution of the sample mean, assigning probabilities to all possible values of x-bar.
Required:
What is the shape of the sampling distribution you would expect to produce?
Mathematics
1 answer:
Lady_Fox [76]2 years ago
7 0

Answer:

By the Central Limit Theorem, it is approximately normal with mean 650 and standard deviation 4.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean of 650 and a standard deviation of 24.

This means that \mu = 650, \sigma = 24.

Sample of 36:

This means that n = 36, s = \frac{24}{\sqrt{36}} = 4

What is the shape of the sampling distribution you would expect to produce?

By the Central Limit Theorem, it is approximately normal with mean 650 and standard deviation 4.

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If you know the length of sides b and c of a right triangle, which equation represents the length of side a, according to the Py
Reptile [31]

Answer:

A=SqRt(c^2-b^2)

Step-by-step explanation:

a^2 + b^2 = c^2

rearrange to solve for a^2

a^2= c^2-b^2

take the square root of each side

a= square root (c^2-b^2)

3 0
2 years ago
Find the area of the shape shown<br> below.
Allisa [31]

Answer:

The area of the figure is 28 units².

Step-by-step explanation:

Find the area of the full rectangle, ignoring the triangle.

a = lw \\ a = 4 \times 8 = 32

Then, find the area of the triangle:

a =  \frac{bh}{2}  \\ a =  \frac{2 \times 4}{2}  \\ a = 4

Finally, subtract:

32 - 4 = 28

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2 years ago
What is the slope of the line through (-4,-6) and (9,-6)
marusya05 [52]

We can use the points (-4,-6) and (9,-6) to solve.

Slope formula: y2-y1/x2-x1

= -6-(-6)/9-(-4)

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Hope This Helped! Good Luck!

8 0
3 years ago
Read 2 more answers
Can yall help meee please
alexira [117]

Answer:

jupiters \: mass \: is \: approximatelty \:  \\   \boxed{{6 \times 10}^{3} \: kg}  \: times, \:  \\ more \: than \: mercurys \: mass

Step-by-step explanation:

............................................................... \\ in \: other \: to \: get \: right \: ans \to \\ you \: divide \: mass \: of \: jupiter \: by \: the \: mass \\  \: of \: mercury : \: so \to \\ ............................................................... \\ jupiters \: mass = 1.898 { \times 10}^{27}  \: kg \\ mercurys \: mass =3.3 \times  {10}^{23}   \: kg \\ their \: mass \: ratio \: is :  \\  =  \frac{1.898 { \times 10}^{27}}{3.3 \times  {10}^{23}}  = 0.5751515152 \times  {10}^{4}   =  \\  \boxed{5,751.515152} \\ hence \: jupiters \: mass \: is \: approximatelty \:  \\  {6 \times 10}^{3}  \: times \: more \: than \: mercurys \: mass

5 0
2 years ago
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Solve the equation. (enter your answers as a comma-separated list. round your answers to four decimal places.) x2e5x + 3xe5x − e
aleksley [76]
It's essential that you use " ^ " to indicate exponentiation if you want to communicate your ideas here accurately.

<span>x2e5x + 3xe5x − e5x = 0 should be written as

x^2e^(5x) + 3xe^(5x) - 1e^(5x) = 0.

e^(5x) can be factored out of all four terms, leaving us with


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However, we can set x^2 + 3x - 1 equal to zero and solve for x:

         -3 plus or minus sqrt(3^2 - 4(1)(-1) )
x = ----------------------------------------------------
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        -3 plus or minus sqrt(13)
   = ----------------------------------------
                                2

So the original equation has two roots.</span>
7 0
3 years ago
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