Chapter 11: Q.34 (page 656)
State the hypotheses.
:
:
Short Answer
Smoking levels per day have no effect on self-reported ethnicity.
: The self-reported ethnicity is influenced by daily smoking levels.
Chapter 11: Q.34 (page 656)
State the hypotheses.
:
:
Smoking levels per day have no effect on self-reported ethnicity.
: The self-reported ethnicity is influenced by daily smoking levels.
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A factory manager needs to understand how many products are defective versus how many are produced. The number of expected defects is listed in Table 11.5.
A random sample was taken to determine the actual number of defects. Table 11.6 shows the results of the survey.
State the null and alternative hypotheses needed to conduct a goodness-of-fit test, and state the degrees of freedom.
A sample standard deviation of minutes is the same as a sample variance of __________ minutes.
Perform a goodness-of-fit test to determine whether the local results follow the distribution of the U.S. overall student population based on ethnicity.
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.
A manager of a sports club keeps information concerning the main sport in which members participate and their ages. To test whether there is a relationship between the age of a member and his or her choice of sport, members of the sports club are randomly selected. Conduct a test of independence.
Sport | ||||
racquetball | ||||
tennis | ||||
swimming |
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