The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days. a. In a letter to an advice column, a wife claimed to have given birth 309 days after a brief visit from her husband, who was working in another country. Find the probability of a pregnancy lasting 309 days or longer. What does the result suggest? b. If the length of pregnancy is in the lowest 4%, then the baby is premature. Find the length that separates premature babies from those who are not considered premature. a. The probability that a pregnancy will last 309 days or longer is (Round to four decimal places as needed.)
The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days. a. In a letter to an advice column, a wife claimed to have given birth 309 days after a brief visit from her husband, who was working in another country. Find the probability of a pregnancy lasting 309 days or longer. What does the result suggest? b. If the length of pregnancy is in the lowest 4%, then the baby is premature. Find the length that separates premature babies from those who are not considered premature. a. The probability that a pregnancy will last 309 days or longer is (Round to four decimal places as needed.)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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![The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days.
a. In a letter to an advice column, a wife claimed to have given birth 309 days after a brief visit from her husband, who was working in another
country. Find the probability of a pregnancy lasting 309 days or longer. What does the result suggest?
b. If the length of pregnancy is in the lowest 4%, then the baby is premature. Find the length that separates premature babies from those who are
not considered premature.
a. The probability that a pregnancy will last 309 days or longer is
(Round to four decimal places as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F546defb5-634a-4a8e-85bb-5f53f5378fa1%2F2a9b7911-6021-40b8-9387-34561789a599%2Feoupy_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days.
a. In a letter to an advice column, a wife claimed to have given birth 309 days after a brief visit from her husband, who was working in another
country. Find the probability of a pregnancy lasting 309 days or longer. What does the result suggest?
b. If the length of pregnancy is in the lowest 4%, then the baby is premature. Find the length that separates premature babies from those who are
not considered premature.
a. The probability that a pregnancy will last 309 days or longer is
(Round to four decimal places as needed.)
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