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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
 17. Games Played by NBA Scoring Leaders A random sample of the number of games played by
individual NBA scoring leaders is found below. Is there sufficient evidence to conclude that the variance in games played differs from 40? Use a = 0.05.
72Â Â Â Â Â Â Â Â Â Â Â Â Â Â 79Â Â Â Â Â Â Â Â Â Â Â 80Â Â Â Â Â Â Â Â Â Â Â 74Â Â Â Â Â Â Â Â Â Â Â 82
79Â Â Â Â Â Â Â Â Â Â Â Â Â Â 82Â Â Â Â Â Â Â Â Â Â Â 78Â Â Â Â Â Â Â Â Â Â Â 60Â Â Â Â Â Â Â Â Â Â Â 75
Source: Time Almanac.
18. Tire Inflation To see whether people are keeping their car tires inflated to the correct level of 35 pounds per
Â
Â
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square inch (psi), a tire company manager selects a sample of 36 tires and checks the pressure. The mean of the sample is 33.5 psi, and the population standard deviation is 3 psi. Are the tires properly inflated? Use a = 0.10. Find the 90% confidence interval of the mean. Do the results agree? Explain.
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