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There is some concern that exposure to gases used in anesthesiology may be harming the health of anesthesiologists. In one study of 525 Michigan nurse anesthesiologists, 10 reported a new malignancy other than skin cancer during the previous year.
What is the appropriate choice of distribution for the incidence of new malignancies in this study?
What is the best estimate of the incidence rate of new malignancies from these data?
Provide a 95% confidence interval for the true malignancy rate.
The overall rate in Michigan for people of the same age distribution was 402.8/100,000 person-years. Did the nurse anesthetists show a higher rate than the general population?
The data show the total number of medals (gold, silver, and bronze) won by each country winning at least one gold medal in the 2006 Winter Olympics. Find the mean, median, and mode of the numbers of medals won by these countries.
Use α =.01 and test for a significant difference. What is your conclusion?
What is the point estimate of the mean planned expenditure by all Americans taking long summer vacations in 2002?
Following data represent random sample of bank balances for population of checking account customers at large eastern bank. Based on data, determine the 95 percent confidence interval estimate for true population mean?
The manager requires the estimate to be within 1.0 minutes of the population value. What sample size is needed?
To find out the test statistics utilizing chi square method. A professional bowler has been having trouble 'hitting the pocket' in order to get strikes.
Using part(a), explain to investor differences between distribution of performance figures for the 2 kinds of stock funds.
The accounting department at Weston Materials, Inc., national manufacturer of unattached garages, reports that it takes two construction workers mean of 32 hours and standard deviation of 2 hours to erect the Red Barn model.
Based on surveys conducted in 1989 and 1999, a researcher compared the proportion of high school age females interested in a career in science in 1989 with the proportion in 1999. He concluded that the proportions were not significantly different ..
Sketch a curve, point out the distribution (i.e., normal , student T, Chi square), critical region(s). test statistics, critical values(s) and n p-value?
Determine the point estimate in this study? Compute the standard error in this example?
Find out the probability that: First electric brush chosen is defective?
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