Suppose Diane and Jack are each attempting to use a simulation to describe the sampling distribution from a population that is skewed left with mean 50 and standard deviation 15. Diane obtains 1000 random samples of size n=4 from theâ population, finds the mean of theâ means, and determines the standard deviation of the means. Jack does the sameâ simulation, but obtains 1000 random samples of size n=30 from the population.


(a) Describe the shape you expect for Jack's distribution of sample means. Describe the shape you expect for Diane's distribution of sample means.


(b) What do you expect the mean of Jack's distribution to be? What do you expect the mean of Diane's distribution to be?


(c) What do you expect the standard deviation of Jack's distribution to be? What do you expect the standard deviation of Diane's distribution to be?

Answers

Answer 1

(a) The shape of Jack's distribution of sample means is expected to be bell-shaped, with the mean being centered at the population mean of 50 and the standard deviation being much larger than the standard deviation of the population. This is because Jack is using larger sample sizes, which results in a more accurate estimate of the population mean.

The shape of Diane's distribution of sample means is expected to be similar to Jack's, but less pronounced. This is because Diane is using smaller sample sizes, which results in a less accurate estimate of the population mean.

(b) The mean of Jack's distribution of sample means is expected to be similar to the population mean of 50, but slightly larger due to the larger sample sizes. The mean of Diane's distribution of sample means is also expected to be similar to the population mean of 50, but again slightly larger due to the larger sample sizes.

(c) The standard deviation of Jack's distribution of sample means is expected to be smaller than the standard deviation of the population, because the larger sample sizes result in a more accurate estimate of the population mean. The standard deviation of Diane's distribution of sample means is also expected to be smaller than the standard deviation of the population, but again to a lesser extent due to the smaller sample sizes.

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Related Questions

Write [tex]7^{-3}[/tex] as a fraction

Answers

Answer:

[tex]\frac{1}{343}[/tex]

Step-by-step explanation:

Using the rule of exponents

[tex]a^{-m}[/tex] ⇔ [tex]\frac{1}{a^{m} }[/tex] , then

[tex]7^{-3}[/tex]

= [tex]\frac{1}{7^{3} }[/tex] = [tex]\frac{1}{343}[/tex]

The highest point in Chicago is 735 feet above sea level. You can represent that numerically using .

Answers

Answer:

+735 feets

Step-by-step explanation:

Points or position above sea level are denoted with positive elevation values while points or positions below sea level are denoted by negative values. The sea level position itself could be viewed as a midpoint such as the position of 0 on a number line ; where distances to the right are positive and distances to the left are negative.

Hence, a point which is said to be 735 feets above sea level would have an equivalent numeric representation of +735 feets

Tyrone has 16 model airplanes on his shelf. He has 4 times as many model airplanes as model trains. How many model trains does Tyrone have?


Write multiplication and division equations to model and solve the problem. Use m for the unknown

Answers

Step-by-step explanation:

4m = 16

divide both sides by 4

m = 4

he has 4 model trains

If line a and line b are parallel, which angles are same-side Interior angles?
A.23 and 211
B. 28 and 23
C. 27 and 23
D. none of these

Answers

Answer:

i think its C. 27 tp 23 ****

Is (1,5) a solution of the graphed system of inequalities?

Answers

Answer: No


Explanation: Because the line don’t go through (1,5) it doesn’t even touch those numbers.

Answer:it’s No

Step-by-step explanation:

I got it right

Solve for N.

N - 26 = 72
N - 26 +
= 72 +

N =

Answers

Answer:

98

Step-by-step explanation:

  Solve  :    n-98 = 0  

Add  98  to both sides of the equation :  

                     n = 98

Answer: N=98. 98-26=72

PLEASE HELP ME!!!!

Find the volume of this sphere.
Use 3 for pi.

Answers

Answer:

904cm3 just use an online sphere calculator they're easy to use

Plz answer

3x+5x=32. ​

Answers

X should equal 4 I’m sorry if I’m wrong have a good day/night !

Step-by-step explanation:

start by adding like terms which would gice us

3x+5x=8x so,

8x=32 divide by 8 on both sides so we leave x by itself giving us x=4

-6x -8y = 28
6х + 4y =-28

would this be infinite many solutions or no solutions?

Answers

-6x -8y = 28
6х + 4y =-28

would this be infinite many solutions or no solutions?

beş üzeri üç ekşi otuz bölübeş eksi iki üzeri iki işlemini sonucu aşağıdakilerden hangisidir?


A) 15


B) 78

C) 95

D) 115




cevaplarınızı bekliyorum.​

Answers

Ce clasă ești sa văd daca te pot ajuta

Which of the following points fall above the line y = x ??
a) (2, 2)
b) (-4,-5)
c) (3, -3)
d) (6,4)
e) (0,9)

Answers

Answer:

a) (2,2)

Step-by-step explanation:

as X=2 and y=2

y=x

The answer should be A 2,2

HELPP PLEASE ASAP I REALLY NEED HELP
attachment below

Answers

When you rotate 90 degrees clockwise, (x,y) becomes (y,-x).

Therefore:
G = (3,1)
H = (0, 4)
I = (-2, -3)
G: (-1, 3)
H: (-4, 0)
I: (3, -2)

Solve for the value of x

Answers

Answer:

x = 47°

Step-by-step explanation:

The secant- secant angle (x) is half the difference of the intercepted arcs, that is

x = [tex]\frac{1}{2}[/tex] (133 - 39)° = 0.5 × 94° = 47°

It is x=47 to your question p

A family smoothie recipe calls for strawberry juice and apple juice. This equation represents the proportional relationship between the number of cups of strawberry juice (s) and apple juice (a) in the recipe.​

Answers

Answer:

21

Step-by-step explanation:

21 divided by 7 is three: to the third power of 11 so your answer is 21, I think

Evaluate for f ^-2 for f = 3 and g = 27 .

Answers

Answer:

1/9

Step-by-step explanation:

if your question is about evaluting f^-2

then the answer is

f = 3

then

f^-2 = 3^-2 = 1/9

Answer:

3

Step-by-step explanation:

You meant f^-2(g) for f = 3 and g = 27.

(3^-2)(27)

= 1/9(27)

= 3

:)

what does 19+r=
PLEASE HELP

Answers

Okay so since there aren’t any values that r is equal to 19 plus r is equal to 19r. I’m pretty sure that’s the answer


What information do you need to know to write an equation relating two quantities that have a proportional relationship?
o constant of proportionality and variable to represent other quantities
O equivalent ratios and units
constant of proportionality and equivalent ratios
variable to represent unknown numbers
No new data to save. Last checked at 5:30pm
Submit Qu
Bi
ere to search

Answers

Answer:

so C but might be A

Step-by-step explanation:

Two quantities have a proportional relationship if they can be expressed in the general form y = kx, where k is the constant of proportionality. In other words, these quantities always maintain the same ratio. That is, when you divide any pair of the two values, you always get the same number k.

good luck, i hope this helps :)

In triangle ABC, and C is a right angle. Find the value of the trig function find the sec(A) if C=25, B=20, A=15

Answers

Answer:

sec A = 5/4

Step-by-step explanation:

Sec of an angle is hypotenuse/adjacent side

In your problem, sec A = 25/20 = 5/4

It helps if you can draw a figure of the problem.  Make sure you memorize the definition of each trig function

Picture is below...........................

Answers

Answer:

C or A

thats all i know hope it helps

urgent urgent urgent plz

Answers

sorry for messy handwriting

Solve the given equation
7/10X=4 3/5

Answers

Answer:

x

=

40

Step-by-step explanation:

Will give brainliest

Answers

Answer:

c

Step-by-step explanation:

Answer:

I'm not 100% sure, but i think it's C. :)

Step-by-step explanation:

i think

PLEASE HELP ME ANYONE

Answers

i believe it’s (0,4) since it’s asking for vertex.

Find the rule. Solve for n.

Answers

Answer:

X is always 1+ bigger than Y

EX: if you have y as 9, X will be 10

Step-by-step explanation:

N = 9

Solve the equation 3(f-1)+f= 1

Answers

Answer:

F = 1

Step-by-step explanation:

3(f-1) + f =

3(1 - 1) + 1 =

3(0) + 1 =

0 + 1 =

1

Therefore F = 1 hope this helped! Please give me a 5 star rating????

Answer: f=1

Step-by-step explanation: 3(f−1)+f=1

3(f−1)+f=1

(3)(f)+(3)(−1)+f=1

3f+−3+f=1

(3f+f)+(−3)=1

4f+−3=1

4f−3=1

4f−3+3=1+3

4f /4 = 4 /4

f=1

What’s the slope and y intercept?

Answers

Answer:

the slope is 15/2 and the y intercept is 0,0

Find the weight of one ciricle

Answers

Answer:

Weight Calculator

Standard conversion factors.

1) MILD STEEL (MS)

MS SQUARE. WEIGHT (KGS ) = WIDTH X WIDTH X 0.00000785 X LENGTH. ...

MS ROUND. WEIGHT (KGS ) = 3.14 X 0.00000785 X ((diameter / 2)X( diameter / 2)) X LENGTH. ...

SS ROUND. DIA (mm) X DIA (mm) X 0.00623 = WEIGHT PER METRE. ...

SS / MS CIRCLE. ...

SS sheet. ...

S.S HEXAGONAL BAR.

Step-by-step explanation:

Simplify

(2a²b)(4ab)

Answers

Answer:

8a^3b^2

Step-by-step explanation:

for brainiest:):):):):)

Answers

Answer:

the ratio of wheat cereal to rice cereal is 1:6 and the value is 1/6 or 0.16666

Step-by-step explanation:

if 1 1/2 = 1/4 then ?=4/4

since we know the value of 1/4 we multiply 1 1/2x4=6 and 1/4x4=1 so the ratio is 1:6. The value of the ratio is the quotient, and the quotient of 1 and 6 is 1/6 or 0.16666

hope this helps sorry if im wrong and have a blessed day :)

Solve using elimination
x+y=7
x-y=-3

Answers

Answer:

I think it's 4

Step-by-step explanation:

if x+y is 7 and x-y is 3 then the answer is 4

Answer:

X=2, y=5

Step-by-step explanation:

X+y=7

x-Y=-3

————-

2x+ 0 =4

2x=4

x=2

solve for y using either equation

x+y=7

2+y=7

y=5

check answers by substituting x and y value in either equation:

x+y=7

2+5=7

7=7

or

x-y=-3

2-5=-3

-3=-3

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