Pele took all samples of size n=40 from a population of test scores. He found that on average, the sample means he obtained were 6.2 points away from the mean of the sample mean which was 80. What are the standard error and the expected value of Pele’s dataset?

Pele took all samples of size n=40 from a population of test scores. He found that on average, the sample means he obtained were 6.2 points away from the mean of the sample mean which was 80. What are the standard error and the expected value of Pele’s dataset?

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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Question

Pele took all samples of size n=40 from a population of test scores. He found that on average, the sample means he obtained were 6.2 points away from the mean of the sample mean which was 80.

What are the standard error and the expected value of Pele’s dataset?

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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