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Suppose that a large group of people are undergoing a blood test for a particular illness. The probability that a random person has the illness in question is equal to 0.001. In order to save on the work, it is decided to split the group into smaller groups each consisting of r people. The blood samples of the r people are then mixed and tested all at once. If the test results are favorable, then one test will have been sufficient for that whole group. Otherwise, r extra tests will be necessary in order to test each of the r people individually. What is the expected value of the number of tests that will have to be done for a group of r people? Verify that r = 32 is the optimal group size.
The project should be 3 pages. Following are the details of project-Review Case 5.3 "Boise Cascade Corporation" (Groebner p.222). Make the necessary computations and write a short report discussing your answers and findings.
What are the chances of winning a prize in Monopoly Sweepstakes? Find the probability of winning at least one of these rare property prizes
Use the method of least squares to estimate the line, E(y) = β0 + β1x. Interpret the β estimates in the words of the problem.
At a party there are 30 students over age 21 and 20 students under age 21. You choose at random 3 of those over 21 and separately choose at random 2 of those under 21 to interview about attitudes toward alcohol.
In a sample of 300 persons to whom materials were sent, 30 students applied for admission. In a two-tail test at the 0.05 level of significance, should we reject the director's claim?
suppose a machines life time in years can be moldeled with an exponential distribution with rate of lambda 14.a.
sales 2363 2.1 advertising - 279 price - 136 unemplpyment r2 .76units of measurement sales is in product units
Ring-no-answer A common form of nonresponse in telephone surveys is "ring-no-answer." That is, a call is made to an active number but no one answers.
(a) Find a data set that maximizes the value of the mean. (b) Find a data set that minimizes the value of the mean.
What is the new mean annual salary (including the bonus and raise) of the employees?
Determine what would happen to your critical value (Z) if you were to change the level of significance (a) from .05 to .1 in a two tailed hypothesis test.
For what kinds of tests can chi-square analysis be used?- Is the chi-square distribution a continuous distribution or a discrete distribution? Explain.
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