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In an opinion survey, a random sample of 1000 adults from the U.S.A. and 1000 adults from Germany were asked whether they supported the death penalty. 590 American adults and 560 German adults indicated that they supported the death penalty. The researcher wants to know if there is sufficient evidence to conclude that the proportion of adults who support the death penalty is higher in the U.S.A. than in Germany. What is the decision at a = .05 and 0.10?
Plot the data, fit a trend line, and discuss the strength of prediction of the regression model.
By using the age midpoints x and the percentages of nurses, do we have a valid probability distribution? Describe.
Find out the decision strategy company must follow, expected value of strategy, and maximum amount the company must pay market research firm for survey results.
Give all steps of a test of the hypothesis that the corresponding population proportions are equal.
q1. the monthly utility bills are normally distributed with a mean value of 130 and a standard deviation of 15.a find
Random sample of 100 people yielded following data on number of tissues utilized in a cold: x-bar = 38, s = 20. By using sample information provided, compute the value of test statistic for the relevant hypothesis test.
You randomly select 425 students and ask each one what the top motivation is for using a credit card. Can you conclude that there has been a chagne in the claimed or expected distribution? Use a =0.025.
Identify Independent and Dependent variable being investigated. Formulate the hypothesis statement regarding your research issue.
Are the companies equal from point of view of fat amount? Test at .02 significance level
If WH is implicated, the firm may face a reputation loss even if no lawsuit is filed. For what values of that reputation loss would issuing the recall be preferable, in terms of EMV?
Find the expected value if the cost of entering this sweepstakes is the cost of a postage stamp. Is it worth entering the contest?
consider the selling prices of the 800 bicycles sold at bike world during june.twenty of the bike sales are selected
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