The distribution of heights of a certain breed of terrier dogs has a mean height of 70 cm and standard deviation of 8 cm, whereas the distribution of heights of a certain breed of poodles has a mean height of 30 cm with a standard deviation of 5 cm. Assuming that the sample means can be measured to any degree of accuracy, find the probability that the sampie mean for a random sample of heights of 60 terriers exceeds the sample mean for a random sample of 80 poodles by at most 44 cm.

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Q: The average cholesterol content of a certain brand of eggs is 215 milligrams, and the standard…

A:

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A: X~N( μ =82 , ? = 5 )     μ = 82 , ? = 5     Z-score =( x - μ )/?

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A: Solution

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Q: The average cholesterol content of a certain brand of eggs is 215 milligrams, and the standard…

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