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A survey of a simple random sample of university alumni finds that six months after graduation, 75 of the 100 liberal arts majors and 45 of the 50 business administration majors had found employment within their field of study. Is the difference significant? Use a hypothesis test to justify your answer.
Carefully define a standard normal distribution. Why does a researcher want to go from a normal distribution to a standard normal distribution? Explain.
the indicator that results in total revenues being equal to total cost is called
Can we conclude, at the level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from months?
A defective picture tube was discovered in the latest shipment. What is the probability that it came from Tyson Wholesale?
a sample standard deviation of 1.1%. Using alpha = 0.05, does the analyst have statistical evidence to reject the claim made by the magazine?
would you favor or oppose providing a path to citizenship for illegal immigrants in the U.S if they met certain requirement including a waiting period, paying fines and back taxes, passing criminal background checks and learning English? What is the ..
the population of iq scores forms a normal distribution with a mean of micro 100 and a standard deviation of ? 15.
a local university administers a comprehensive examination to the recipients of a b.s. degree in business
How many participants need to be enrolled in each group to have 90% chance of detecting a significant difference using a two-sided test with a a= .05 if compliance is perfect?
questionc1-tinternetgdpco2cellularfertilityliteracyalgeria0.656.0930.32.858.3argentina10.0811.323.819.32.496.9australia3
What is the probability the Time/CNN poll will provide a sample proportion within plus-or-minus 0.02 of the population proportion?
Perform the chisquare test for a uniform distribution. At α = .05, does this sample contradict the assumption that sales are the same for each beverage?
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