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Question: A college athletic program wishes to estimate the average increase in the total weight an athlete can lift in three different lifts after following a particular training program for six weeks. Twenty-five randomly selected athletes when placed on the program exhibited a mean gain of 47.3 lb with standard deviation 6.4 lb. Construct a 90% confidence interval for the mean increase in lifting capacity all athletes would experience if placed on the training program. Assume increases among all athletes are normally distributed.
Assuming the sigma of 200 was actually the standard deviation for the sample, recalculate the interval estimate. Discuss how this changed your result from that in part b.
the mean television viewing for americans is 15 hour per week monday november 2003. suppose a sample of 80 americans is
What are other ways, beyond looking at the p-value alone, you could use to try to interpret what this outcome of r(2398) = -.21 tells us about the relationship between length of time taking drug X and the size of the tumor? Support your responses.
Although these errors are often well concealed, let's suppose that a thorough IRS audit will uncover them. If a random 250 tax returns are audited.
explain some of the differences between the method of distribution functions the transformation method for finding the
two numbers x and y are chosen at random from the interval 0 1. what is the density function of maxxy
An economics course are independent events, what is the probability that a randomly selected student is registered in either a math course or an economics course?
Also suppose that the probability that the current player does not reach the semifanals of the tournament is 0.58 and that there is a 0.71 probability that jill is ranked next weekon the WTA circuit. What is the probability that the current player..
Of the other 161 people receiving a placebo, 124 reported pain symptoms. Combining the two samples together, what is the overall proportion of those who reported pain symptoms among all participants?
An experiment with three outcomes has been repeated 50 times, and it was learned that E1 occured 20 times, E2 occured 13 times, and E3 occured 17 times.
Use the table or technology to answer each question. Include an appropriately labeled sketch of the Normal curve for each part.
the population in millions and the violent crime rate per 1000 were recorded for 10 metropolitan areas. the data are
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