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Someone claims that the mean age of residents of a certain neighborhood is 50, but you suspect that the mean age is actually higher than that. A sample of 36 residents reveals a mean age of 53, with a sample standard deviation of 15.
a. State the null and alternative hypotheses.
b. Compute the value of the test statistic.
c. Taking α to be 0.05, what is/are the critical values associated with testing your hypothesis?
d. What conclusion do you come to?
Assuming this time that your data came from a sample of only 16 residents.
The variable recorded for each subject was the number of additional yards (possibly negative) that the subject could drive the ball by the end of the season. In the two-way ANOVA the DFM
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Now he wants to know if there is a difference between the three formats. Is there?
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To select a _________ sample, an intact group of subjects that represent the population is selected.
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