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The heights of young women aged 20 to 29 follow approximately the N(64, 2.7) distribution. Young men the same age have heights distributed as N(69.3, 2.8).
Height is measured in inches.
A young woman in that age group is randomly selected; independently, a young man in that age group is randomly selected. What is the probability that the young man is taller than the young woman by more than 5 inches?
A young woman in that age group is randomly selected; independently, a young man in that age group is randomly selected. What is the probability that the young man is taller than the young woman by more than 5.3 inches?
you want to test a research centers claim that less than 35 of college applications are submitted online. a hypothesis
The manager requires the estimate to be within 1.0 minutes of the population value. What sample size is needed?
1.ten years ago a study at a large midwestern university found that 18 of the students at the university were very
Mmean of 67 inches and a population standard deviation of 4 inches. For any one person selected at random, what is the probability that their height will be: more than 69 inches?
The population standard deviation for both groups is 6. At α = 0.01, is there a difference in the cholesterol levels between the two groups? Find the 99% confidence interval for the difference of the two means.
Suppose that the insurance company developed a new payment system in an effort to increase this percentage. A sample of 200 claims processed under this system revealed.
1 make a histogram including a table consisting of frequencies class limits class boundaries and class widths with the
Whether they voted for the Democratic or for the Republican candidate in the last congressional election. Which of these variables are categorical and which are quantitative?
Generate three random observations from the uniform distribution between -10 and 40 by using the following random numbers:
Different approaches for creating systems simulation models include?
assume that the salaries of elementary school teachers in the united states are normally distributed with a mean of
1. according to the bureau of labor statistics the mean hourly wage in april 1996 was 14.49 for transportation and
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