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Annual snowfall in a city, amount of money a student spends for books

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1. Suppose the annual snowfall in a city is normally distributed with a mean of 75 inches and a standard deviation of 20 inches. Find the probability that in a given year, snowfall in the city would be between 50 and 100 inches (that is, within §25 of 75).

2. Let X denote the amount of money a student spends on books in a semester. Assume that population mean (¹) of X is $450, and the population standard deviation (¾) of X is $80. Suppose you have drawn a simple random sample of size 100 from the student population. Compute the probability that the sample mean (X) is between $440 and $46.

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The annual snowfall in a city are determined as well as the amount of money a student spends on books are determined by using the standard deviation.

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1. Suppose the annual snowfall in a city is normally distributed with a mean of 75 inches and a standard deviation of 20 inches. Find the probability that in a given year, snowfall in the city would be between 50 and ...

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