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Statistics: Hypothesis Testing – #29540

Question: A recent study indicated that women took an average of 8.6 weeks of unpaid leave from their jobs after the birth of a child. Assume that this distribution follows the normal probability distribution with a standard deviation of 2.0 weeks. We select a sample of 35 women who recently returned to work after the...

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Statistics: Hypothesis Testing – #29541

Question: The manager of the Tee Shirt Emporium reports that the mean number of shirts sold per week is 1,210 with a standard deviation of 325. The distribution of sales follows the normal distribution. What is the likelihood of selecting a sample of 25 weeks and finding the sample mean to be 1,100 or less?

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Statistics: Testing Hypothesis – #29536

Question: A researcher collected daily sodium intake and systolic blood pressure readings on 12 patients. Obtain the regression equation from SPSS and include the table you used for the data. Use the 5 step hypothesis testing approach to determine if the regression equation is significant at alpha = 0.05. What would be a likely blood...

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Statistics: Hypothesis Testing – #29538

Question: A medical informatics manager reviews sick day use in her department. She identifies that employees in her small department used the following amount of sick time in the past year: Men: 5,10,2,0,6,4,5,15 Women: 8,9,3,5,0,4,15 The statistician indicated she should use a nonparametric test to determine if there is a difference in sick time use...

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