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Medicine and Clinical Studies Some research suggests that college student athletes who are subject to high stress levels (due to academic demands, personal problems, or other sources) are more likely to be injured during a game. A random sample of student athletes was obtained, and a questionnaire was used to determine the stress level of each prior to a game. Following the game, the injury status of each athlete was also recorded. The data are summarized in the following table.
Is there any evidence to suggest that stress level and injury are dependent? Conduct the appropriate hypothesis test with a = 0.05.
Create and answer two exponential model questions: Formula y = ab^x. Create and answer two continuously compounded interest questions: Formula A = Pe ^r*t
Describe how to find the exact p-value in a test of H0: p = .25 versus Ha: p > .25 when the sample size is n = 50 and we have observed X = 17 successes.
Data analysis-Construct a dot plot or stem plot of the averages from the sampling by touch.
Consider the experiment- "the next integer generated." Define the following: Event A = "Odd number" = (1,3,5,7) and Event B "number more than 4" = 5,6,7,8.
warren buffy is an enormously wealthy investor who has built his fortune through his legendary investing acumen. he
Is this sample sufficient to conclude that the eye spots have a significant influence on the birds behavior? Use a two tail test with alpha =.05. Compute the estimated Cohen's d to measure the size of the treatment.
Compute the 95% confidence interval for the difference between the two population means if the sample means are 75 and 70 and the margin of error for the CI.
a study was conducted with vegetarians to see whether the number of grams of protein each ate per day was related to
x you then repeat this procedure three more times. you learned in class that u_x = u can you conclude that the mean of the four sample mean will be equal to the population mean, 65? why or why not?
Does the evidence suggest that postpartum women do not get enough sleep? Use =0.05 level of significance. How is the problem set up using the classical and P-value approach?
Obtain a 95% con?dence interval estimate of the mean recovery. What assumptions do we need to make? Test for these assumptions.
Determine a 95% confidence interval for the mean efficiency of a given batch of motors. If we want to cut the confidence interval by 1/3, how many motors should be tested?
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