Chapter 11: Q.25 (page 655)
A marathon runner is interested in the relationship between the brand of shoes runners wear and their run times. Sh
The given statement is a test of independence.
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Airline companies are interested in the consistency of the number of babies on each flight, so that they have adequate safety equipment. They are also interested in the variation of the number of babies. Suppose that an airline executive believes the average number of babies on flights is six with a variance of nine at most. The airline conducts a survey. The results of the flights surveyed give a sample average of with a sample standard deviation of . Conduct a hypothesis test of the airline executive’s belief.
A meteorologist wants to know if East and West Australia have the same distribution of storms. What type of test should she use?
A market researcher wants to see if two different stores have the same distribution of sales throughout the year. What type of test should he use?
p-value = ________
Graph the situation. Label and scale the horizontal axis. Mark the mean and test statistic. Shade the value.
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