Chapter 11: Q.35 (page 656)
Enter expected values in Table 11.32. Round to two decimal places.
The expected frequency is
Given data:
To find the expected frequency :
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p-value = ________
What is the p-value?
In 2007, the United States had 1.5 million homeschooled students, according to the U.S. National Center for Education Statistics. In Table 11.56 you can see that parents decide to homeschool their children for different reasons, and some reasons are ranked by parents as more important than others. According to the survey results shown in the table, is the distribution of applicable reasons the same as the distribution of the most important reason? Provide your assessment at the
5% significance level. Did you expect the result you obtained?
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 teacher predict that the distribution of grades on the final exam will be and they are recorded in table 11.27
The actual distribution for a class of 20 is in table 11.28
test statistic is -------
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