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1. For n = 36, α = 0.025, σ = 8, and H0: µ ≤ 100, verify that power is 0.61 when µ = 103.2. For n = 49, α = 0.05, σ = 10, and H0: µ = 50, verify that power is approximately 0.56 when µ = 47.
Suppose this data met all assumptions of a paired t-test. Why would you still be unable to test if there is a significant mean difference?
A company is interested in estimating the mean number of days of sick leave taken by its employees. The firm's statistician randomly selects 100 personnel files and notes the number of sick days taken by each employee.
guy thinks that nba players in general are taller than high school basketball players. he has measured 5 nba players
Independent random samples of 12 users of the other system rate their system on the same scale. Based on these data, are the two telecommunication system equally liked? Explain.
A man is on trial accused of murder in the first degree. The prosecutor presents evidence that he hopes will convince the jury to reject the hypothesis that the man is innocent. This situation can be modeled as a significance test with the followi..
A student scored 84 points on a test where the mean score was 79 and the standard deviation was 4. The student's z score was:
Among the 300 employees of a company, 240 are union members, whereas the others are not. If 6 of the employees are chosen by lot to serve on a committee that administers the pension fund, find the probability that 4 of the 6 will be union members ..
Suppose the probability that a major earthquake occurs on a given day in Fresno, California, is 1 in 10,000. In the next 1,000 days, what is the expected number of major earthquakes in Fresno?
suppose that there are a total of 18 students in an elementary school class. the teacher assigns each of the students a
An airline estimates that 90% of people booked on their flights actually show up. If the airline books 71 people on a flight for which the maximum number is 69, what is the probability that the number of people who show up will exceed the capacity..
ANOVA examines statistically significant group differences, particularly when we have more than two groups to contrast with each other, on the scores for any particular continuous dependent variable. Is this statement?
Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places. What is the lower limit of the 90% confident interval? What is the upper limit of the 90% confident interval?
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