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In a study initiated in 1940, a research group followed the lives of 200 Harvard graduates and 400 inner-city, working-class men from Boston and Cambridge. Massachusetts. Eventually, 26 from the Harvard group and 110 from the inner-city, working-class group became alcoholics. Assume that these are random samples from the collection of Harvard graduates and inner-city, working-class men from Boston and Cambridge.
(a) Find a 95% confidence interval for the proportion p of Harvard graduates who eventually became alcoholics.
(b) Find a 95% confidence interval for the proportion p of the inner-city, working-class group who eventually became alcoholics.
Below is a plot of the Olympic gold medal winning performance in the high jump (in inches) for the years 1900 to 1996.
Calculate a 3-month moving average forecast for months 4 through 9 also Compare the two forecasts by utilizing MAD. Which forecast appears to be more accurate.
The 95% prediction interval for a new patient with a 2-day cholesterol level of 220 is
Which of these variables are discrete and which are continuous random variables?
Solve different inventory control problems using an appropriate OR method.
The ideal number of children. "What do you think is the ideal number of children for a family to have?" A Gallup Poll asked this question of 1016 arbitrarily chosen adults. Almost half (49%) thought two children was idea suppose that p = 0.49 is e..
Find out the operating characteristics for this system.
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He randomly samples 45 oil wells throughout the United States and determines the mean output to be 10.7 barrels per day with a standard deviation of 1.3 barrels. Test the researcher's claim at the .025 level of significance.
A recent article in the Myrtle Beach Sun Times reported that the mean labor cost to repair a colour television is $90 with a standard deviation of $22. Monte's TV Sales and Service completed repairs on two sets this morning. The labor cost for the..
what is the chance the average contents of the cans will be less than advertised and what will be the standard deviation of the number of men who help at home, based on the first survey
At the .01 significance level, is there a relationship between job pressure and age?
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