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Inessa [10]
3 years ago
12

A statistics teacher fills a large container with 1000 white and 3000 red beads and then mixes the beads thoroughly. She then ha

s her students take repeated SRS of 50 beads from the container. After many SRSs, the values of the sample proportion of red beads are approximated well by a Normal distribution with a mean of 0.75 and standard deviation of 0.06.
(a) What is the population? Describe the population distribution.
(b) Describe the sampling distribution of p^. How is it different from the population distribution?

Mathematics
1 answer:
irina [24]3 years ago
5 0

Answer:

I’m sorry but I’m not much help. I usually don’t answer questions I don’t know about, but I can do one thing.

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A bakery will make 5,400 graham crackers. The graham crackers are packaged in boxes of 60. How many boxes of graham crackers wil
inna [77]

Answer:

90 boxes

Step-by-step explanation:

If you divide 5,400 by 60 you get 90. Hope this helps, let me know if correct, and have a great day!!

8 0
3 years ago
Read 2 more answers
A researcher collects data on the relationship between the amount of daily exercise an individual gets and the percent body fat
fredd [130]

Answer: approximately 24

Step-by-step explanation:

We need to plot a regression line.

So we fit a model using the regression of Y on X, that an equation that predict Y for a given X using:

(Y -mean(Y ))= a(X-meanX)...........1

Where the formular of a is given the attachment.

N= the of individuals = 5

Y = amount of fat

X = time of exercise

mean(X )= sum of all X /N

= 131/5 = 26.2

mean(Y) = sum of all Y/N

= 104/5 = 20.8

a = N(SXY) - (SX)(SY)/ NS(X²) -(SX)²......2

SXY = Sum of Product X and Y

SX= sum of all X

SY = Sum of all Y

S(X²)= sum of all X²

(SX) = square of sum of X

a = -0.478

Hence we substitute into 1

Y-20.8 = -0.478 (X-26.2)

Y -20.8 = -0.478X - 12.524

Y = -0.478X + 33.324 or

Y = 33.324 - 0.478X (model)

When X = 20

Y = 33.324 - 0.478 × 20

Y = 33.324 - 9.56

Y = 23. 764

Y =24(approximately)

Carefully meaning of formula used in attachment to the solution they are the same.

4 0
3 years ago
Find the equation of the line that passes through point A (1,7) and B (-3, -1)
amid [387]

Answer:

The equation of the line is 2 x - y + 5 = 0.

Step-by-step explanation:

Here the given points are A( 1, 7) & B( -3, - 1) -

Equation of a line whose points are given such that

( x_{1}, y_{1} ) & ( x_{2}, y_{2} )-

 y - y_{1}  = \frac{ y_{2} - y_{1} }{ x_{2} - x_{1} }   ( x - x_{1}  )

i.e. <em> y - 7= \frac{- 1 - 7}{ -3-1}  ( x- 1)</em>

<em>       y - 7 =  \frac{- 8}{- 4} ( x -1)</em>

<em>       y - 7 =  2 ( x - 1) </em>

<em>       y - 7  =   2  x - 2</em>

<em>       2 x - y + 5 = 0</em>

Hence the equation of the required line whose passes trough the points ( 1, 7) & ( -3, -1)  is 2 x - y  + 5 = 0.

6 0
3 years ago
I will mark you brainliest just give me the answer please. (I suck at math a lot.) 2s + 7 &lt; 13: 1, 2, 3
AleksandrR [38]

Answer:

3

Step-by-step explanation:

mark brainliest

4 0
2 years ago
A model with 12 squares labeled exact value and 3 squares labeled error. A model with 18 squares labeled exact value and 3 squar
Shtirlitz [24]

Answer:

a,c,e

Step-by-step explanation:

on edge-

6 0
3 years ago
Read 2 more answers
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