A random sample of size ʼn has been selected from a normally distributed population whose standard deviation is σ. In hypothesis testing for the population mean, the t-test should be used instead of the z-test if: A. n > 30 and ♂ is unknown B. n < 30 and o is known C. both A and B are true D. both A and B are false
A random sample of size ʼn has been selected from a normally distributed population whose standard deviation is σ. In hypothesis testing for the population mean, the t-test should be used instead of the z-test if: A. n > 30 and ♂ is unknown B. n < 30 and o is known C. both A and B are true D. both A and B are false
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.CR: Chapter 13 Review
Problem 8CR
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