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Author Question: A researcher wants to carry out a hypothesis test involving the mean for a sample of size n = 15 . ... (Read 95 times)

jrubin

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on: Jun 24, 2018
A researcher wants to carry out a hypothesis test involving the mean for a sample of size n = 15 . He does not know the true value of the population standard deviation, but is reasonably sure that the underlying population is approximately normally distributed. Should he use a z-test or a t-test in carrying out the analysis? Why?

Question 2

The ___________________ _ is appropriate for hypothesis tests in which the sample standard deviation(s) is used in estimating the value of the population standard deviation ().
 Fill in the blank(s) with correct word


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Jody Vaughn

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Reply #1 on: Jun 24, 2018
Answer to Question 1

t-test; He should use a t-test to carry out the analysis since the population standard deviation is unknown, but he is reasonably sure the population is approximately normally distributed.

Answer to Question 2

t-test


jrubin

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Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

komodo7

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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