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A researcher studying frogs is investigating the distance that a certain species of frog can jump. the jump lengths appear to be approximately normally distributed with a mean of 90 inches and a standard deviation of 8 inches.
a) What proportion of frog jumps are less than 74 inches? b) What jump lengths represent the middle 95% of frog jumps? c) What is the probability of observing a random frog jump that is longer than 98 inches?
Sagot :
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