Chapter 11: Q.43 (page 657)
A math teacher wants to see if two of her classes have the same distribution of test scores. What test should she use?
A math teacher will use a test of Homogeneity.
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use a solution sheet to solve the hypothesis test problem. Go to Appendix E for the chi-square solution sheet. Round expected frequency to two decimal places car manufacturers are interested in whether there is a relationship between the size of the car an individual drives and the number of people in the driver’s family (that is, whether car size and family size are independent).To test this, suppose that car owners were randomly surveyed with the results in Table . Conduct a test of independence.
| Family Size | Sub & Compact | Mid-size | Full-size | Van & Truck |
Table 11.44
a. Explain why a goodness-of-fit test and a test of independence are generally right-tailed tests.
b. If you did a left-tailed test, what would you be testing?
Decide whether the following statements are true or false;
The standard deviation of the chi-square distribution is twice the mean.
chi-square test statistic = ________
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