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A triathlon consisting of swimming, cycling, and running is one of the more strenuous amateur sporting events. An article reports on a research study involving sixteen male triathletes. Maximum heart rate (beats/min) was recorded during performance of each of the three events. For swimming, the sample mean and sample standard deviation were 188.0 and 7.3, respectively. Assuming that the heart-rate distribution is (approximately) normal, construct a 98% CI for true mean heart rate of triathletes while swimming. (Round your answers to one decimal place.)
Determine wheter the given procedures results in a binominal distribution. If it is not binomial, identify the requirements that are not satisfied.
A local health center noted that in a sample of 400 patients 80 were referred to them by the local hospital. a) Provide a 95% confidence level for all the patients who are referred to the health center by the hospital.
for the following data xy806144364651sketch a scatterplot to show the relationship between x and y. what does the
arbitron media research inc. conducted a study of the ipod listening habits of men and women. one facet of the study
Based on data from a car bumper sticker study, when a car is randomly selected, the number of bumber stickers and corresponding probabilities are shown below.
One of these has a history of selling an average of 200 items, with a standard deviation of 20. If he wants to maximize his profits, how many should he order?
in a chemical processing plant it is important that the yield of a certain type of batch product stay above 80. if it
a state lottery has1100 prizes of 1145 prizes of 1025 prizes of 655 prizes of 2902 prizes of 1290amp 1 prize of
The same survey was mailed to 500 adults aged 25–34 without the gift certificate. There were 65 responses from the first group and 45 from the second group. (a) Perform a two-tailed test comparing the response rates (proportions) at α = .05
the probability of getting a defective widget is .10. you select five widgets for the national widget championship.a.
Assume the population standard deviations are not the same. At the .05 significance level, is there a difference in the mean waiting time?
The monthly sales volume (in thousands of dollars) for a manufacturer of snow skis is seasonal (there tend to be more skis sold during fall and winter months than during warmer months). The following table shows the monthly seasonal indexes for th..
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