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Question: To assess to the relative happiness of men and women in their marriages, a marriage counselor plans to administer a test measuring happiness in marriage to n randomly selected married couples, record the their test scores, find the differences, and then draw inferences on the possible difference. Let μ1 and μ2 be the true average levels of happiness in marriage for men and women respectively as measured by this test. Suppose it is desired to find a 90% confidence interval for estimating μd = μ1 - μ2 to within two test points. Suppose further that, from prior studies, it is known that the standard deviation of the differences in test scores is σd ≈ 10. What is the minimum number of married couples that must be included in this study?
Why might driver be tempted not to use seat belt "just on this trip"?
Examples of correlated variables. Give an example of two variables in your field of study that are- positively correlated- negatively correlated.
Category of decision rule which contains maximax decision rule is?
If the number of heads turns out to equal one of your 11 numbers, you win a dollar. which 11 numbers should you pick, and what is your chance of winning? explain.
A survey of 300 union members in New York reveals that 112 favor the Republican candidate for governor. Construct the 98% confidence interval for the true population proportion of all New York State union members who favor the Republican candidate..
The standard deviation of the monthly growth rates will remain 60%. Is the increased investment growth worth the consulting fee?
This exercise shows that non differentiabilities of the dual function given in Section 10.3, often tend to arise at the most interesting points and thus cannot be ignored. Show that if there is a duality gap, then the dual function q is nondiffe..
How many straight flush possible hands exist in Poker? (5 cards of 5 consecutive ranks, all in 1 suit, including Aces, Kings, Queens and Jacks). Explain.
are you annoyed with spam e-mail? suppose a random sample of 200 penn state students was asked this question of which
a student randomly guesses at 20 multiple choice questions. each question has four possible answers with only one being
a paired samples t test may be thought of as which of the following?answermcnemars test when it is referenced to a
Explain how these histograms demonstrate what the Central Limit Theorem says about the sampling distribution model for sample means.
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