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Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.