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Problem 1
Assume that breast cancer affects .8 percent of the female population between 40 and 50 years of age. There are two kinds of test results: true positive (you have it) and false positive (the test indicates you do have it, but you really do not). Assume Mammograms are 90% accurate at spotting people who have breast cancer (true positive), and are 93% accurate at spotting people who do not (true negative). What are the false negative and false positive accuracies? If a female tests positive for breast cancer, compute the likelihood that she indeed has the cancer.
Problem 2
A pair of dice is rolled. The sum of the faces on top is observed. What are the expectation, variance, and standard deviation of the observed sum? The Expectation and Variance Template attached to the main posting is optional and recommended. Click on Enable Editing. Attach the work as an Excel file to your group.
Mattel Corporation produces a remote-controlled car that requires three AA batteries. The mean life of these batteries in this product is 35 hours with a standard deviation of 5.5 hours. As part of its testing program Sony tests samples of 16 batt..
What was the cost for the 10 percent of employees who incurred the highest dental expense?
Use α = 0.10 and assume that the population is normally distributed. Write a paragraph that interprets the test's decision.
How would I calculate estimates of L, Lq, W, Wq and probability that there is no customer in the system? How would I calculate L, Lq, W, Wq and probability there is no voter in the system with 2 customer service representatives?
How large a sample should be selected in order to estimate the population proportion to within a margin of error of 0.02 with 97% confidence. The sample proportion from the preliminary sample was 0.18.
A shoe salesman want to see if his female customers have a preference in the color of shoe purchased. What is the test value for the following data?
Find a formula for the linear function described. The function, y=f(x), where f(c)=k, f(c+h)=3k and the graph of f(x) goes through the origin.
Compute standard normal z-score corresponding to value of x = 23. e. Determine P(x 23). G. Determine P(16
Since over 10,000 students in his state took the Math SAT, he can show that the P-value for testing whether the mean score in his state is more than the national average of 480 is less than 0.0001. What we can conclude from this?
Do you try to pad your insurance claim to cover your deductible? About 40% of all U.S. adults will try to pad their insurance claims. Suppose that you are the director of an insurance adjustment office.
Six employees who have formed a car pool. If only four of these employees can drive, how many possible seating arrangements are there for the group?
One month of the true difference and with 95% confidence if the range of all the data is 6 years? Use the appropriate tables in your book.
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