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(a) What proportion of pregnancies lasts more than (b) What proportion of pregnancies lasts between 261 and 279 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 246 days? (d) A "very preterm" baby is one whose gestation period is less than 252 days. Are very preterm babies unusual?

(a) What proportion of pregnancies lasts more than (b) What proportion of pregnancies lasts between 261 and 279 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 246 days? (d) A "very preterm" baby is one whose gestation period is less than 252 days. Are very preterm babies unusual?

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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Answer parts b c d 

The lengths of a particular animal's pregnancies are approximately normally distributed, with mean = 270 days and standard deviation o= 12 days. (a) What proportion of pregnancies lasts more than 273 days? (b) What proportion of pregnancies lasts between 261 and 279 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 246 days? (d) A "very preterm" baby is one whose gestation period is less than 252 days. Are very preterm babies unusual? (a) The proportion of pregnancies that last more than 273 days is 0.4013 (Round to four decimal places as needed.) (b) The proportion of pregnancies that last between 261 and 279 days is 0.3202 (Round to four decimal places as needed.) n example Get more help Search s H H 7 101 ✓ √1 D PHÁC TU More A Clear all
Transcribed Image Text:The lengths of a particular animal's pregnancies are approximately normally distributed, with mean = 270 days and standard deviation o= 12 days. (a) What proportion of pregnancies lasts more than 273 days? (b) What proportion of pregnancies lasts between 261 and 279 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 246 days? (d) A "very preterm" baby is one whose gestation period is less than 252 days. Are very preterm babies unusual? (a) The proportion of pregnancies that last more than 273 days is 0.4013 (Round to four decimal places as needed.) (b) The proportion of pregnancies that last between 261 and 279 days is 0.3202 (Round to four decimal places as needed.) n example Get more help Search s H H 7 101 ✓ √1 D PHÁC TU More A Clear all
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