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The British Journal of Sports Medicine (Apr. 2000) studied the effect of massage on boxing performance. Two other variables measured on the boxers were blood lactate concentration (in mM) and the boxer's perceived recovery (on a 28-point scale). On the basis of information provided in the article, the data recorded in the accompanying data file were obtained for 16 five-round boxing performances in which a massage was given to the boxer between rounds. Conduct a test to determine whether blood lactate level (y) is linearly related to perceived recovery (x). Use alpha = .05.
Find the p-value for testing the hypotheses you gave in the previous problem. Show all decimal places in your answer.
What fraction of the calls last between 4.2 and 5 minutes?
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Find the lowest possible score a candidate can score and still qualify. Assume the scores are normally distributed.
Develop 3 regression models to forecast selling price based upon each of other factors individually. Which of these is best?
If Household is selected at random, find out the probability that it feels economic conditions are good?
An experiment consists of flipping the fair coin three times and noting the number of heads and tails. A random variable x is defined to be two times the number of heads plus the number of tails.
Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance and (d) standard deviation of probability distribution and (e) interpret results in context of real life situation.
Provide a brief description of the main features of these data from the scatter plot and Describe why you would use performance as the predictor variable and performane related pay as the dependent variable in such a model.
Find a 95% confidence interval for the population mean selling price of all homes in this neighborhood.
Find a 90% confidence interval for the population average µ of the percentage of hospitals providing at least some charity care.
Perform a posthoc test that is suitable if we assume that group 7 is a control group and that the other are different treatment groups and that we are only interested in finding significant treatments, not to compare them.
Find the asymptotic distribution of the MLE of the indicated parameter and find formulas for approximate standard errors of the MLE.
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