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(b) The standard error of the sample mean is s²/n. (c) A researcher wants to test Ho: x= 30 versus the one- sided alternative Ha: x < 30. (d) The 95% margin of error for the mean u of a Normal population with unknown o is the same for all SRS of size n.

(b) The standard error of the sample mean is s²/n. (c) A researcher wants to test Ho: x= 30 versus the one- sided alternative Ha: x < 30. (d) The 95% margin of error for the mean u of a Normal population with unknown o is the same for all SRS of size n.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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7.14 What is wrong? In each of the following situations, identify what is wrong and then either explain why it is wrong or change the wording of the statement to make it true. (a) As the degrees of freedom k decrease, the t distribution density curve gets closer to the N(0,1) curve. (b) The standard error of the sample mean is s²/n. (c) A researcher wants to test Ho: x= 30 versus the one- sided alternative Ha: x < 30. (d) The 95% margin of error for the mean μ of a Normal population with unknown σ is the same for all SRS of size n.
Transcribed Image Text:7.14 What is wrong? In each of the following situations, identify what is wrong and then either explain why it is wrong or change the wording of the statement to make it true. (a) As the degrees of freedom k decrease, the t distribution density curve gets closer to the N(0,1) curve. (b) The standard error of the sample mean is s²/n. (c) A researcher wants to test Ho: x= 30 versus the one- sided alternative Ha: x < 30. (d) The 95% margin of error for the mean μ of a Normal population with unknown σ is the same for all SRS of size n.
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