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Average heart rate for Americans is 72 beats/minute. A group of 18 individuals participated in an aerobics fitness program at American Kickboxing of New York to lower their heart rate. After six months, there was evaluation conducted on the group to identify if the program had significantly slowed their heart. The mean heart rate for the group was 69 beats/minute with a standard deviation of 6.5. You need to construct a 95% confidence interval for the mean of all such heart rate levels to determine if the aerobics program was effective in lowering heart rate. What is the margin of error?
(a) What is the distribution of the number of times this event occurs in 20 rolls? (b) Calculate the probability that the event occurs five times.
The simple law of averages gives the man who listens a atremendous dvantage.
What is the probability that a customer will get at least 20% off?
A student's reaction to the instructor's statement that covariance analysis is inappropriate when the treatment regression lines do not have the same slope was as follows:
What retirement plan should Addison consider if he works for a large private firm? What retirement plan should Addison consider if he works at a university?
How do I construct an example where I would be able to apply the concept of expected value to a problem (e.g. a financial investment problem would be a great way to demonstrate how various stocks in a portfolio produce a weighted average of the ov..
Find the percentage of the total variation that cant explained by the linear relationship between the two variable.
This shows that the relationship between two variables cannot be obtained from the two individual distributions of the variables.
consider a function f x 3 x 2 cx 1 ? 1 lt x lt 2 and 0 otherwise. is there a value of c that will make the function
What is wrong with gauging stockholder views about employee benefits by mailing a questionnaire that IBM stockholders could complete and mail back?
a) What is the hydronium ion concentration in a solution that has a pH of 7.3? b) Find the pH of a 0.0025 M HCl solution.
Examine the data below showing the weights (in pounds) of randomly selected checked bags for an airline's flights on the same day. (a) At α = .05, is the mean weight of an (a) At α = .05, is the mean weight of an international bag greater? Show the h..
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