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Question: Swimming heats. In Exercise we looked at the times in two different heats for the 400-m women s run from the 2004 Olympics. Unlike track events, swimming heats are not determined at random. Instead, swimmers are seeded so that better swimmers are placed in later heats. Here are the times (in seconds) for the women s 400-m freestyle from heats 2 and 5. Do these results suggest that the mean times of seeded heats are not equal? Explain. Include a discussion of assumptions and conditions for your analysis.
Exercise: Running heats. In Olympic running events, preliminary heats are determined by random draw, so we should expect that the abilities of runners in the various heats to be about the same, on average. Here are the times (in seconds) for the 400 - m women s run in the 2004 Olympics in Athens for preliminary heats 2 and 5. Is there any evidence that the mean time to finish is different for randomized heats? Explain. Be sure to include a discussion of assumptions and conditions for your analysis.
during ejection from a military airplane the pilots acceleration must not exceed 16g ig injury is to be avoided.
Can you tell me what are the advantages and limitations of applying nonparametric tests in solving business problems?
Use the Wald-Wolfowitz test to determine whether there is evidence that average owner salaries in the two business lines are not equal.
A woman is pregnant with twin boys. Twins may be either identical or fraternal (nonidentical). In general, 1/3 of twins born are identical.
If perfect markets existed, would wages, prices, and interest rates among countries be more similar or less similar than under conditions of imperfect markets? Why?
What are the mean value and standard deviation of the number among these 15 that are from the second section? What are the mean value and standard deviation of the number of projects not among these first 15 that are from the second section?
a survey is to be made of the prevalence of the common disease in a large population. for any disease that affects
How much should they charge for a 2 year extended warranty so that they will still make money selling the extended warranties in the long run and keep the cost of the warranties as low as possible to make them more marketable?
A manufacturer of flashlight batteries took a sample of 13 batteries from a day's production and used them continuously until they failed to work.
use the random variable x with values x 2 3 4 5 or 6 with px 0.05xa determine p x 4 b find p x gt or eq 4 c what is
Find the regression equation to predict the cognitive series score from the 7 minute screen score using SPSS. Be sure to write out the equation by hand using the variable names
Check the assumptions and conditions for inference about the mean.- Find a 99% confidence interval for the true percentage of flights that arrive late.
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