Author Question: Find the indicated percentage for the normally distributed variable. Round your answer to two ... (Read 48 times)

meagbuch · **on:** Jan 18, 2020

Question 1

Find the indicated percentage for the normally distributed variable. Round your answer to two decimal places, if necessary.

The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. What is the probability that a human pregnancy lasts at least 289 days?
◦ 8.80%
◦ 99.7%
◦ 8.08%
◦ 91.92%

Question 2

Find the indicated percentage for the normally distributed variable. Round your answer to two decimal places, if necessary.

The monthly incomes of trainees at a local mill are normally distributed, with a mean of $1,100 and a standard deviation $150. What percentage of trainees earn less than $875 a month?
◦ 6.86%
◦ 6.68%
◦ 99.7%
◦ 93.32%

fur · **Reply #1 on:** Jan 18, 2020

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