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The heights of 18-year-old men are approximately normally distributed with mean 68 inches and standard deviation 3 inches. What is the probability that the average height of a sample of ten 18-year-old men will be between 69 and 71 inches
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Posted: 2012-07-01 22:27:00
Find z such that 20.3% of the standard normal curve lies to the right of z?
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Posted: 2012-07-01 22:22:00
A person's level of blood glucose and diabetes are closely related. Let x be a random variable measured in milligrams of glucose per deciliter (1/10 of a liter) of blood. Suppose that after a 12-hour fast, the random variable x will have a distribution that is approximately normal with mean = 74 and standard deviation of = 29. What is the probability that, for an adult after a 12-hour fast, x is more than 37?
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Posted: 2012-07-01 22:25:00
How do frequency tables, relative frequencies, and histograms showing relative frequencies help us understand sampling distributions?
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Posted: 2012-07-01 22:26:00
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