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A researcher performed a independent sample t test to test whether population mean of one group...

A researcher performed a independent sample t test to test whether population mean of one group is more than the the other. After taking random sample from both groups he calculated the p-value. It was 0.0345. He changed his mind and decided to test for difference of means in two populations. What is the new p- value?

a.
0.0345

b.
0.01725

c.
0.069

d.
Cannot determine from given information.

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

When the researcher performed the first test, it was a right tailed test (one tailed). Then the p-value = 0.0345.

Next time, the researcher decided to perform that test again. This time this is a two-tailed test.

So, the p-value will be 2 times of previous p-value as it is two-tailed test.

Therefore, p-value for the new test is 2*0.0345 = 0.069.

The appropriate answer will be (c) 0.069.

Hope this solution will help you to understand. If you are satisfied with the answer then please give a upvote for this answer. Thank you.

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