Homework Help: statistics

Posted by Michelle on Monday, May 16, 2011 at 6:22pm.

on the daily run of an express bus, the average number of passengers is 48. the standard deviation is 3. Assume the variable is normally distributed. find the probability that the bus will have.

a) between 36 and 40 passengers
b) fewer than 42 passengers
c) More than 48 passengers
d) between 43 and 47 passengers

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