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Specimens of blood from 10 different animals were analyzed for blood count, say Y (in units of 100) and packed cell volume count X (in mm^3) with results as given below. Assuming normality, test the hypothesis that the true correlation coefficient p between blood count and volume count is zero. If the test is rejected, find a 95% confidence interval for p.
Which is relatively better: a score of 81 on a psychology test or a score of 56 on an economics test? Scores on the psychology test have a mean of 87 and a standard deviation of 9.
Give an example of a null and alternative hypotheses. This can be a personal item or something at work. Additionally, identify the Type I and Type II Errors that could occur with your decision-making process.
a financial executive lives in ottawa but frequently must travel to toronto. she can go to toronto by car train or
Suppose 5.9% of certain population use public transportation to get to work. You randomly select 380 workers and ask them if they use public transportation to get to work.
a hypothesis test for a population proportion p is given belowho p 0.25 vs.ha p ne 0.25 ne means not equalfor sample
Frequently, tests that yield abnormal results are repeated for confirmation. What is the probability that for a normal person a test will be at least 1.5 times as high as the upper limit of normal on two seperate occasions?
question suppose that a population has mu 50 and sigma 10.a what is the z value for x 75?b what is the z value for x
An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $275.66 with a standard deviation of $78.11.
Explain why an observed value of 250 hours is not unusual for an individual light bulb, even though it is outside the confidence interval you calculated.
If the city manager knows the average salary nationally is $38,300, which test of significance should be used? Why?
question suppose an auto company has three plants in cities a b and c and two major distribution centers in d e f and
a simple system consists of four components placed in parallel. each component has the same reliabity r. if we want the
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