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Question: Suppose a two-sided test for a difference in two means resulted in a p-value of 0.08.
a. Using the usual criterion for hypothesis testing, would we conclude that there was a difference in the population means? Explain.
b. Suppose the test had been constructed as a one-sided test instead, and the evidence in the sample means was in the direction to support the alternative hypothesis. Using the usual criterion for hypothesis testing, would we be able to conclude that there was a difference in the population means? Explain.
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the accompanying data are x advertising share and y market share for a particular brand of cigarettes during 10
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All premiums were calculated at a constant interest rate of i. B earned a constant rate of j on his investments. Is j greater than, less than or equal to i? Why?
a) How would the confidence interval change if the sample size had been 800 instead of 200? b) How would the confidence interval change if the confidence level had been 90% instead of 95%?
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Clearly define the dependent and independent variables that are the focus of the team's study. The dependent variable is the variable whose value is the result or is a function of the control or independent variables.
Is there a significant difference in the proportions of patients reporting pain relief? Run the test at a 5% level of significance.
Find the probability that a randomly selected timing belt lasts for more than 120,000 miles. c. Find the probability that a randomly selected timing belt lasts
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