An instructor asks each of the 54 members of his class to write down “at random” one of the numbers 1, 2, 3, . . . , 13, 14, 15. Since the instructor believes that students like gambling, he considers 7 and 11 to be lucky numbers. He counts the number of students, x, who selected 7 or 11. How large must x be before the hypothesis of randomness can be rejected at the 0.05 level?
Answer to relevant QuestionsToday’s newspapers and magazines often report the findings of survey polls about various aspects of life. The Pew Internet & American Life Project (January 13–February 9, 2005) found that “63% of cell phone users ages ...All tomatoes that a certain supermarket buys from growers must meet the store’s specifications of a mean diameter of 6.0 cm and a standard deviation of no more than 0.2 cm. The supermarket’s buyer visits a potential new ...Consider the sample data in exercise 9.1. a. Find the mean and standard deviation for the “floor-to-door” time. b. How would you estimate the mean “floor-to-door” time for all female college students? Using the computer output in Exercise 9.27, determine the value for each of the following: a. Point estimate b. Confidence coefficient c. Standard error of the mean d. Maximum error of estimate, E e. Lower confidence ...State the null hypothesis, Ho, and the alternative hypothesis,Ha, that would be used to test each of the following claims: a. A chicken farmer at Best Broilers claims that his chickens have a mean weight of 56 oz. b. The ...
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