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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ = 271 days and standard deviation σ = 16 days. (a) What proportion of pregnancies lasts more than 299 days? (b) What proportion of pregnancies lasts between 251 and 279 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 263 days? (d) A "very preterm" baby is one whose gestation period is less than 235 days. Are very preterm babies unusual? (a) The proportion of pregnancies that last more than 299 days is 0.0401 (Round to four decimal places as needed.) (b) The proportion of pregnancies that last between 251 and 279 days is 0.5859 (Round to four decimal places as needed.) CO (c) The probability that a randomly selected pregnancy lasts no more than 263 days is 0.3085 (Round to four decimal places as needed.) (d) The probability of a "very preterm" baby is. This event (Round to four decimal places as needed.) would be unusual because the probability is less than 0.05.

The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ = 271 days and standard deviation σ = 16 days. (a) What proportion of pregnancies lasts more than 299 days? (b) What proportion of pregnancies lasts between 251 and 279 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 263 days? (d) A "very preterm" baby is one whose gestation period is less than 235 days. Are very preterm babies unusual? (a) The proportion of pregnancies that last more than 299 days is 0.0401 (Round to four decimal places as needed.) (b) The proportion of pregnancies that last between 251 and 279 days is 0.5859 (Round to four decimal places as needed.) CO (c) The probability that a randomly selected pregnancy lasts no more than 263 days is 0.3085 (Round to four decimal places as needed.) (d) The probability of a "very preterm" baby is. This event (Round to four decimal places as needed.) would be unusual because the probability is less than 0.05.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ = 271 days and standard deviation o=16 days. (a) What proportion of pregnancies lasts more than 299 days? (b) What proportion of pregnancies lasts between 251 and 279 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 263 days? (d) A "very preterm" baby is one whose gestation period is less than 235 days. Are very preterm babies unusual? (a) The proportion of pregnancies that last more than 299 days is 0.0401 (Round to four decimal places as needed.) (b) The proportion of pregnancies that last between 251 and 279 days is 0.5859 (Round to four decimal places as needed.) (c) The probability that a randomly selected pregnancy lasts no more than 263 days is 0.3085 (Round to four decimal places as needed.) (d) The probability of a "very preterm" baby is. This event (Round to four decimal places as needed.) C would be unusual because the probability is less than 0.05.
Transcribed Image Text:The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ = 271 days and standard deviation o=16 days. (a) What proportion of pregnancies lasts more than 299 days? (b) What proportion of pregnancies lasts between 251 and 279 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 263 days? (d) A "very preterm" baby is one whose gestation period is less than 235 days. Are very preterm babies unusual? (a) The proportion of pregnancies that last more than 299 days is 0.0401 (Round to four decimal places as needed.) (b) The proportion of pregnancies that last between 251 and 279 days is 0.5859 (Round to four decimal places as needed.) (c) The probability that a randomly selected pregnancy lasts no more than 263 days is 0.3085 (Round to four decimal places as needed.) (d) The probability of a "very preterm" baby is. This event (Round to four decimal places as needed.) C would be unusual because the probability is less than 0.05.
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