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Massage therapy for athletes. Does a massage enable the muscles of tired athletes to recover from exertion faster than usual? To answer this question, researchers recruited eight amateur boxers to participate in an experiment (British Journal of Sports Medicine, April 2000). After a 10-minute workout in which each boxer threw 400 punches, half the boxers were given a 20-minute massage and half just rested for 20 minutes. Before returning to the ring for a second workout, the heart rate (beats per minute) and blood lactate level (micromoles) were recorded for each boxer. The researchers found no difference in the means of the two groups of boxers for either variable.
(a) Identify the experimental units of the study.
(b) Identify the variables measured and their type (quantitative or qualitative).
(c) What is the inference drawn from the analysis?
(d) Comment on whether this inference can be made about all athletes.
a little confused on this one.assume the probability of a household owning a blue-ray player is 0.70.what is the
The amount of a brand of soda in 12-ounces can is approx. normal with a mean of 12.1 ounces and a standard deviation of 0.15 ounces.
A random sample of 20 cars driving down I-294 is selected and their speed is monitored. Compute the mean, median, mode, and standard deviation, Q1, Q3, Min, and Max for the above sample data on speed per car
An article about women in business claims that 28% of all small businesses in the United States are owned by women. Find the critical value (or values), and clearly show the rejection and nonrejection regions. Compute the test statistic. Decide wheth..
Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution. Use a =.05 and .01 and perform a goodness of fit test.
the following data show samples of three chain stores in three different locations in one town and the amount of
a statistics instructor collected data on the time it takes the students to complete a test. the test taking time is
Examples of hotel functions include setting daily room rates, attracting events (meetings, conferences, etc.), managing hotel material, etc.
If this number is based on a random sample of 100 slices, and the population standard deviation is 30 calories, give a 90% confidence interval for the population mean.
What is the purpose of using correlation analysis? How might correlation analysis be used in business decisions or in strategy formulation and implementation?
For the WAIS, S = 15. What WAIS IQ do you predict for a person who scores 65 on the Stanford-Binet? Write a sentence summarizing these results.
in a study designed to test the effectiveness of magnets for treating back pain 35 patients were given a treatment with
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