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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Get started for freea. 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?
The Insurance Institute for Highway Safety collects safety information about all types of cars every year, and publishes a report of Top Safety Picks among all cars, makes, and models. Table 11.58 presents the number of Top Safety Picks in six-car categories for the two years 2009 and 2013. Analyze the table data to conclude whether the distribution of cars that earned the Top Safety Picks safety award has remained the same between 2009 and 2013. Derive your results at the 5%
significance level.
When does the chi-square curve approximate a normal distribution?
What can you conclude at the significance level ?
A sample standard deviation of minutes is the same as a sample variance of __________ minutes.
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