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Analyze the shrinkage data in as if they arose from a split-plot design in which brands are the blocks, wash temperatures are applied to groups of shirts together (whole units), and the drying temperatures are randomly assigned within the whole units. Let the random variable be the average centimeters of shrinkage in length of the two shirts in each subgroup.
Explain briefly what important fact about confidence intervals is illustrated by comparing these two intervals and the 95% confidence interval from Exercise.
suppose there are 2 customers in the checkout line at marios used book emporium. each customer buys a number of books
Prepare a mixed integer programming model for this problem.
A similar survey of 37,000 adults in the US in 1966 found that 43% of adults were current smokers. Construct a 95% confidence interval for the difference between proportions of current smokers in 1991 and 1965.
a poll was taken of a simple random sample of movie viewers in a test audience at a new romantic comedy. the movie was
The university policy department must write, on average, five tickets per day to keep department revenues at budgeted levels. Suppose the number of tickets written per day follows a Poisson distribution with mean of 6.5 tickets per day. Interpret ..
In a cathode interference resistance experiment, with filament voltage constant, the plate current was measured on seven twin triodes.
If there is evidence to suggest that the true mean thickness is greater than 1 8 inch, the town will embark on an extensive safety program. Using the interval constructed in part (a), should the town stress greater safety? Justify your answer.
Only 10% of Americans rated their financial situation as excellent, according to a Gallup Poll taken April 10 13, 2006.
What would the average sales have to be in order to justify a statement that business had improved, at the 5 % significance level?
Can you determine the exact number of days that it rained? Can you conclude anything about the number of days that it rained? Explain.
State in each of given cases whether you would expect relationship between given variables to be positive or negative or neither.
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