1. Suppose the annual snowfall in a city is normally distributed with a meanof 75 inches and a standard deviationof 20 inches. Find the probabilitythat 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 sampleof size 100 from the student population. Compute the probability that the sample mean (X) is between $440 and $46.

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 …

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.