to be done in under 3 minutes. You decide to d if the average length of songs pl

Question

to be done in under 3 minutes. You decide to d if the average length of songs played on college radio is under 3 minutes. 3.108. Test Statistic For each of the following, state whether an increase in the value will move the test statistic away from o, closer to o, or not change the test statistic for a test on the population mean, assuming that all other quantities in the hypothesis testing procedure stay the same. (a) The difference between the sample mean and the null value (b) The sample standard deviation

Explanation / Answer

a) An increase in the difference between population mean and null value will move test statistic closer to 0.

b) An increase in the sample standard deviation will move the test statistic away from 0.

c) An increase in the level of significance will not change the test statistic.

d) An increase in the sample size will move test statistic closer to 0.

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