Calculate probability in normal distribution

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Reference no: EM13828648

1. If Z is a standard normal random variable, then the value z for which P(-z < Z < z) equals 0.8764 is

A. 1.16
B. 0.3764
C. 1.54
D. 3.08

2. The average height of flowering cherry trees in a nursery is 11 feet. If the heights are normally distributed with a standard deviation of 1.6, find the probability that a randomly selected cherry tree in this nursery is less than 13 feet tall.

A. 0.67
B. 0.89
C. 0.95
D. 0.11

Additional Information

These multiple choice questions are the part of Statistics. The first question is about standard scores and the second question is about probability in normal distribution.

Reference no: EM13828648

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