Chapter 11: Q 55 (page 658)
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Read the statement and decide whether it is true or false.
The test to use when determining if the college or university a student chooses to attend is related to his or her socioeconomic status is a test for independence.
A fisherman is interested in whether the distribution of fish caught in Green Valley Lake is the same as the distribution of fish caught in Echo Lake. Of the 191 randomly selected fish caught in Green Valley Lake, 105 were rainbow trout, 27 were other trout, 35 were bass, and 24 were catfish. Of the 293 randomly selected fish caught in Echo Lake, 115 were rainbow trout, 58 were other trout, 67 were bass, and 53 were catfish. Perform a test for homogeneity at a 5% level of significance.
Read the statement and decide whether it is true or false.
The test to use to determine if a six-sided die is fair is a goodness-of-fit test.
Suppose an airline claims that its flights are consistently on time with an average delay of at most minutes. It claims that the average delay is so consistent that the variance is no more than minutes. Doubting the consistency part of the claim, a disgruntled traveler calculates the delays for his next flights. The average delay for those flights is minutes with a standard deviation of minutes.
If an additional test were done on the claim of the average delay, which distribution would you use?
Use a goodness-of-fit test to determine if high school principals believe that students are absent equally during the week or not.
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