Chapter 9: Q. 9.12 (page 515)
Assume the -value is . What type of test is this? Draw the picture of the -value.
Short Answer
The indispensable thesis shows that the test is right- tagged.
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Chapter 9: Q. 9.12 (page 515)
Assume the -value is . What type of test is this? Draw the picture of the -value.
The indispensable thesis shows that the test is right- tagged.
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According to an article in Bloomberg Businessweek, New York City's most recent adult smoking rate is Suppose that a survey is conducted to determine this year’s rate. Nine out of randomly chosen N.Y. City residents reply that they smoke. Conduct a hypothesis test to determine if the rate is still or if it has decreased.
The US Department of Energy reported that of homes were heated by natural gas. A random sample of homes in Kentucky found that were heated by natural gas. Does the evidence support the claim for Kentucky at the level in Kentucky? Are the results applicable across the country? Why?
For Americans using library services, the American Library Association claims that at most of patrons borrow books. The library director in Owensboro, Kentucky feels this is not true, so she asked a local college statistic class to conduct a survey. The class randomly selected patrons and found that borrowed books. Did the class demonstrate that the percentage was higher in Owensboro, KY? Use level of significance. What is the possible proportion of patrons that do borrow books from the Owensboro Library?
A teacher believes that of students in the class will want to go on a field trip to the local zoo. She performs a hypothesis test to determine if the percentage is the same or different from . The teacher samples students and reply that they would want to go to the zoo. For the hypothesis test, use a level of significance.
First, determine what type of test this is, set up the hypothesis test, find the p-value, sketch the graph, and state your conclusion.
According to the N.Y. Times Almanac the mean family size in the U.S. is . A sample of a college math class resulted in the following family sizes:
At level, is the class’ mean family size greater than the national average? Does the Almanac result remain valid? Why?
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