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A student wanted to study the ages of couples applying for marriage licenses in his county. He studied a sample of 94 marriage licenses and found that in 67 cases the husband was older than the wife. Do the sample data provide strong evidence that the husband is usually older than the wife among couples applying for marriage licenses in that county? Explain briefly and justify your answer.
Calculate the start and finish times for each activity and determine the minimum number of weeks for completing the project. Find the critical set of activities for the project.
you are given the accompanying response data on concentration of a chemical as a function of time. the six sets of
in the fall semester of 2011 48.1 of the students at a university were women. suppose that two students in the
The standard deviation of the sample was 1.7 years. Using the 0.95 degree of confidence, what is the confidence interval within which the population mean lies?
The expected value of the number of simple random samples of size 20 that must be drawn until (and including) the first sample that contains at least one voter who is neither a Democrat nor a Republican is?
The Court of Appeals erred in stating that petitioners'regression analyses were "unacceptable as evidence of discrimination", because they did not include all measurable variables thought to have an effect on salary level.
let x and y be independent exponential random variables with respective parameters 2 and 3. find the cdf and density of
in an emergency the typical driver requires about 0.75 seconds to get his or her foot onto the brake. the distance that
Should the new pudding flavour be withdrawn? Advise the marketing manager by performing an appropriate hypothesis test at the 10% level of significance. Also show the null and alternative hypothesis for this test.
suppose x has a geometric distribution with success probability 13.determine the probability distribution of y xx1
question the international chef inc. markets three blends of oriental tea premium duke grey and breakfast. the firm
Assume the wages are normally distributed with a standard deviation of $0.45. If a worker at this car wash is selected at random, what is the probability that the worker earns more than $6.75?
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