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Two hundred fifty managers with degrees in business administration indicated their fields of concentration as shown below.
Major Top Management Middle Management TOTAL
Management 65 60 125
Marketing 30 20 50
Accounting 25 50 75
TOTAL 120 130 250
At α = .01 using the p-value approach, test to determine if the position in management is independent of the major of concentration. Briefly discuss.
Conduct a one-tailed hypothesis test given the information below. A certain brand of Green Energy light bulbs was advertised as having an average illumination life-span of 2,500 hours.
question university admissionsthe dean of a university is worried about gender discrimination. despite having identical
Body mass index is measured as the ratio of weight in kilograms to height in meters squared. Generate a 95% confidence interval estimate of the true BMI.
Could you conclude that Queens College Professors live longer than average? Use the appropriate two-tailed test with an α = 0.05. Also, construct a 95% confidence interval. Do the statistical test and the confidence interval agree? Write up your resu..
a manufacturer of disk drives for notebook computers wants a mtbf of at least 50000 hours. recent test results for 15
To estimate the average time it takes to assemble a certain computer component, the industrial engineer at an electronic firm timed 40 technicians in the performance of this task, getting a mean of 12.73 minutes and a standard deviation of 2.06 mi..
let x follows a binomial distribution with mean equals .55 and standard deviation equals .7228. find n and
What is the probability the average of the sample is more than $38000 and What is the standard deviation of the sample mean
Find the volume of the figure below (assume a right circular cylinder on bottom and half a sphere on top.
Suppose your friend in given problem arranged for three more cars, labeled the 9 cars A-I, changed a to .05, and conducted the "quiet" test. The results are shown in the accompanying table. Perform a Mann-Whitney U test and write a conclusion.
Jim owns three real estate offices in Anytown. He has decided to open one more office, but cannot decide between hometown or uptown as the towns where he wants to locate.
future electronics makes cd players. its research department found that the life of the laser beam device is normally
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