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Geographers took 250 depth readings for a mountain lake. The readings were normally distributed with a mean of 57 feet and a standard deviation of

Geographers took 250 depth readings for a mountain lake. The readings were normally distributed

with a mean of 57 feet and a standard deviation of 6 feet. 4 pts each

a) What percent of the depths were between 45 and 69 feet?

b) What percent of the depths were more than 69 feet?

c) How many of the depth readings were below 51 feet?

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