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Take the Stairs
The World Summit Wing Hotel in China is Beijing's tallest hotel and hosts the Vertical Run. There are 81 floors, 330 meters, and 2041 steps to reach the roof. Independent random samples of men's and women's times (in minutes) from the 2013 run were obtained.
a. Is there any evidence of a difference in variability of times for men and women who finished this vertical run? Use a = 0.05 and assume normality.
b. Find bounds on the p value associated with this hypothesis test.
Read the articles about all four applications of simulation mentioned in Prob. 22.2-1. For each one, write a one-page summary of the application and the benefits it provided.
Identify a key variable that you want to predict, and specify at least two variables that you think would be key in making that prediction.
1. determine if this is an example of a variable or a parameter 79.6 of americans own at least one vehicle.2. determine
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A random sample of 25 selected from a shipment indicates a sample average of 7.31 inches. Set up a 95% confidence interval estimate of the true average diameter of the gyroscope in this shipment. Does the population of gyros need to have a diamete..
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an article in the washington post stated that nearly 45 of the u.s. population is born with brown eyes although they
Choose and make data displays. Describe the shapes of the samples and how they differ.- Perform a t test to compare the population mean repair times. Give hypotheses, the test statistic, and the P-value.
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