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Section I: Multiple Choice Select the best answer for each question. A researcher
Chapter 7, Problem T7.6(choose chapter or problem)
Section I: Multiple choice Select the best answer for each question.
A researcher initially plans to take an SRS of size n from a population that has mean 80 and standard deviation 20. If he were to double his sample size (to 2n), the standard deviation of the sampling distribution of the sample mean would be multiplied by
(a) \(\sqrt{2}\)
(b) \(1 / \sqrt{2}\)
(c) 2 .
(d) \(1 / 2\)
(e) \(1 / \sqrt{2 n}\)
Questions & Answers
QUESTION:
Section I: Multiple choice Select the best answer for each question.
A researcher initially plans to take an SRS of size n from a population that has mean 80 and standard deviation 20. If he were to double his sample size (to 2n), the standard deviation of the sampling distribution of the sample mean would be multiplied by
(a) \(\sqrt{2}\)
(b) \(1 / \sqrt{2}\)
(c) 2 .
(d) \(1 / 2\)
(e) \(1 / \sqrt{2 n}\)
Step 1 of 2
Given:
The mean value of the population is 
The standard deviation is 
The sample size is doubled; that is 2n.