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Q1) A researcher suggests that male nurses earn more money than female nurses. A survey of 16 male and 20 female nurses reported the data below. Is there enough evidence, at Alpha = .01, to support the claim that male nurses earn more money?
Q2) A company reported that an insured woman's average stay in the hospital for normal childbirth is 2.3 days, while an uninsured woman's average stay is 1.9 days. Both samples were of 16 women and the standard deviation for each was 0.6. At Alpha = .01, test the claim that the means are equal. Then calculate the 99% confidence interval for the difference of the means.
To check this theory, 20 invoices are randomly selected and 5 are found to have errors. What is the probability that of the 20 invoices written, five or more would contain errors if the theory is valid?
Write 1-2 paragraphs for each component of the model (days-to-repair; interval between breakdowns; lost revenue; putting it together).
She collected the employee performance ratings recorded before and after workshop attendance and stored the paired ratings for all 35 in Perform.
She then selects a sample of 102 football players and finds that their average math SAT is 460. Use alpha =.01 to perform the appropriate hypothesis test.
A researcher collects data on children's weights from a random sample of children in the South and concludes that children in the South weigh less than the national average.
The dean of students believes that teh costs are greater this semester. What is the test value for this hypothesis?
Based on this information, calculate the interest charged by each card for this purchase and which card is the better deal and by how much
A few random results for you to ponder...do the results justify the conclusions? Why or why not? Give a reason why the conclusions don't necessarily follow from the statement.
When bucketing data for a histogram what is the standard way of dealing with data entries that are on the boundary of two buckets?
part-1reinforce understanding of power beta and alpha.problem a packing process is designed to fill steel drums with
Use a bag of M&M TM candies and perform an examploe Chi-squared analysis based on your random sampling(s). State a hypothesis and a few reasons why it along with your Chi-squared analysis may be different from someone else's findings.
If Weight 1 is the weight (in pounds) of a random sample of five men who were accepted as models, and Weight 2 is the weight (in pounds) of a random sample of five men who were rejected as models, which of the following is the appropriate inferenc..
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