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Author Question: A population consists of the following five values: 19, 18, 10, 19, 12. Assume that samples of size ... (Read 120 times)

asd123

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on: Aug 2, 2018
A population consists of the following five values: 19, 18, 10, 19, 12. Assume that samples of size 2 are randomly selected with replacement from this population. The first sample selected is 18, 18.
 
  What is the mean of the sampling distribution of means?
  A) 15.6 B) 19 C) 18 D) 15

Question 2

The numbers of books sold over the course of a four-day book fair were 182, 159, 223, and 86. Assume that samples of size 2 are randomly selected with replacement from this population of four values.
 
  List the 9 different possible samples and find the mean of each sample. Describe the sampling distribution of means.


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Cheesycrackers

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Reply #1 on: Aug 2, 2018
Answer to Question 1

A

Answer to Question 2

Possible samples: 182-182; 182-159; 182-223; 182-86; 159-182; 159-159; 159-223; 223-86; 86-182; 86-159; 86-223; 86-86
Means: 182, 170.5, 202.5, 134, 170.5, 159, 191, 122.5, 202.5, 191, 223, 154.5, 134, 122.5, 154.5, 86
The probability of each sample is 1/16 so the sampling distribution consists of the 16 sample means paired with the probability of 1/16.


asd123

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Reply 2 on: Aug 2, 2018
YES! Correct, THANKS for helping me on my review

zacnyjessica

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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