Mathematics, 08.06.2021 01:00, lovemusic4
A researcher drew a sample of 400 people, measured their IQs, and tested the null hypothesis that IQ = 100. The researcher obtained z = +3.00, which led her to reject the hypothesis (was 15.0).
(a) What was the standard error of the mean?
(b) What was the mean of the sample?
(c) The test yielded a statistically significant outcome. Does it appear to be an important one? Explain.
(d) How much of a standard deviation did the discrepancy between X and hyp amount to?
Answers: 3
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A researcher drew a sample of 400 people, measured their IQs, and tested the null hypothesis that IQ...
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