Determining probability using standard normal distribution

Reference no: EM1321886

Q1) Determine the probability, P(Z < 0.17), using standard normal distribution.

i) .8300

ii) .4325

iii) .5675

iv) .0675

Q2) Average height of flowering cherry trees in nursery is 11 feet. If heights are normally distributed with standard deviation of 1.6, determine probability that randomly chosen cherry tree in this nursery is less than 13 feet tall.

i) 0.67

ii) 0.89

iii) 0.95

iv) 0.11

Q3) Mrs. Smith's reading class can read mean of 175 words per minute with standard deviation of 20 words per minute. Top 3% of class is to get a special award. What is the minimum number of words per minute a student would have to read to get award?

Reference no: EM1321886

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