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>Workers and senior-level bosses were asked if it was seriously unethical to monitor employee e-mail. The results are summarized in the table to the right. Use a 0.05 significance level to test the claim that the response is independent of whether the subject is a worker or a boss. Yes No Workers 192 250 Bosses 41 86 […]
Suppose you know that the distribution of sample proportions of nonresidents in samples of 200 students is normal with a mean of 0.46 and a standard deviation of 0.07 Suppose you select a random sample of 200 students and find that the proportion of nonresident students in the sample is 0.42 a. How many standard […]
According to a research, 52.0% of households nationwide used natural gas for heating during a year. Recently, a survey of 2,400 randomly selected households showed that 53.0% used natural gas. Use a 0.05 significance level to test the claim that the 52.0% national rate has changed. A. Formulate the null and alternative hypotheses. Choose the […]
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