(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
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Answer parts b c d
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.)
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VIEWStep 2: (b) Calculation of proportion of pregnancies last between 261 and 279 days
VIEWStep 3: (c) Calculation of probability that randomly selected pregnancy last no more than 246 days
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