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Question: Take me out to the ball game. A researcher compared a random sample of recently divorced men in a large city with a random sample of men from the same city who had been married at least 10 years and had never been divorced. The researcher measured 122 variables on each man and compared the two samples using 122 separate tests of significance. The variable measuring how often the men attended Major League Baseball games with their spouse was significant at the 1% level, with the married men attending a higher proportion of games with their spouse, on average, than the divorced men did while they were married. Is this strong evidence that attendance at Major League Baseball games improves the chance that a man will remain married? Discuss.
If the scientist want to cut the margin of error in half how many deer must they inspect?
For machine gun ammunition to be acceptable, the US Army requires that 96 percent of rounds fired hit a specified target. The test is to fire a 50 round burst at the target and observe whether this condition is met.
Based on information in Statistical Abstract of the United States (116th Edition); the average annual miles driven per vehicle in the United States is 11.1 thousand miles, with c = 600 miles. Suppose that a random sample of 42 vehicles owned by re..
Use a spreadsheet with the data below to find the all-items index numbers listed below for Years 1 and 2 with Year 0 as the base year.
A quality improvement program has been instituted in an organization to reduce total quality costs. Discuss the impact of such a program on prevention, appraisal, and failure costs.
A data set has values ranging from a low of 10 to a high of 50. What's wrong with using the class limits 10-20, 20-30, 30-40, 40-50 for a frequency table?
Suzie's Sweatshirts is a home-based company that makes upscale, hand painted sweatshirts for children. Forecasts of sales for the next year are Autumn: 125
Determine the typical seasonal patterns for sales using the ratio-to-moving-average method. Project the sales for 2004, and then seasonally adjust each quarter.
Does this data provide evidence at the .05 significance level that there is a difference in the proportion of humorous ads in British versus American trade magazines? Please show work.
Using an appropriate statistical test determine if there is a significant association between gender and satisfaction with the new initiative.
After taking a random sample of 25 "Fun-Size" candy bars, some sugar-happy statistics students calculate that a 90% confidence interval for the true mean weight of the candy bars is 0.992 to 0.998 ounces. What are the point estimate and margin of ..
Prove d/dt(u(x(t),t))+tanh(x(t))(d/dx(u(x(t),t)))=0 u(x(t),0)=a(x(t)) limit as x tends to infinity of u(x,t)=0 has at most one solution.Explain why there is no boundary condition at x=0 and find a solution for the special case a(x(t))=sinh(x(t))
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