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Bananas are sold in bunches at a grocery store and typically consist of 4minus−8 bananas per...

Bananas are sold in bunches at a grocery store and typically consist of

4minus−8

bananas per bunch. Suppose the weight of these bunches follows a normal distribution with a mean of 3.54 pounds and a standard deviation of 0.63 pounds. What is the probability that a randomly selected bunch of bananas will weigh more than 3.0 pounds?

A.

0.5398

B.

0.8051

C.

0.6950

D.

0.9463

The time for a professor to grade an exam is normally distributed with a mean of 16.3 minutes and a standard deviation of 4.2 minutes. What is the probability that a randomly selected exam will require between 14 and 19 minutes to grade?

A.

0.5837

B.

0.4477

C.

0.3804

D.

0.3175

0 0
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