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...

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?

Question: A researcher sampled 100 women from a medical record database and identified their smoking status and parity. Use the 5 steps of hypothesis testing to determine whether pregnancy and smoking status are independent. Smoking Status Parity Before Pregnancy No children Children Nonsmoker 20 20 Smoker 5 55

Question: A medical student surveys adults to determine if gender and seat belt use are independent. Use the 5 steps of hypothesis testing to determine whether gender and seat belt use are independent. Seat belt use Gender M F Belt 70 60 No belt 30 40

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...

Question: Two health inspectors rate 11 hospitals on cleanliness. Determine whether their rankings are comparable, using the appropriate nonparametric test and the 5 steps of hypothesis testing. Inspector 1 Inspector 2 2 3 2 3 1 4 5 3 1 3 4 1 3 3 2 2 5 4 2 1 4 3

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...