The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ = 266 days and standard deviation o = 12 days. (a) What proportion of pregnancies lasts more than 287 days? (b) What proportion of pregnancies lasts between 257 and 272 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 263 days?
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ = 266 days and standard deviation o = 12 days. (a) What proportion of pregnancies lasts more than 287 days? (b) What proportion of pregnancies lasts between 257 and 272 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 263 days?
MATLAB: An Introduction with Applications
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Author:Amos Gilat
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![5:00
38%
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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ = 266 days and
standard deviation = 12 days.
(a) What proportion of pregnancies lasts more than 287 days?
(b) What proportion of pregnancies lasts between 257 and 272 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 239 days. Are very preterm babies unusual?
(a) The proportion of pregnancies that last more than 287 days is
(Round to four decimal places as needed.)
(b) The proportion of pregnancies that last between 257 and 272 days is
(Round to four decimal places as needed.)
(...)
(d) The probability of a "very preterm" baby is
than 0.05.
(Round to four decimal places as needed.)
(c) The probability that a randomly selected pregnancy lasts no more than 263 days is
(Round to four decimal places as needed.)
|||
=
Vo) 1
LE2 ... 46 ...
This event
O
unusual because the probability is](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd7e3a8f9-0b31-43fa-8644-8b6dd13b0c5a%2F395662fb-d229-4d92-8d3d-ee8601a84345%2Fa03pl9_processed.jpeg&w=3840&q=75)
Transcribed Image Text:5:00
38%
K
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ = 266 days and
standard deviation = 12 days.
(a) What proportion of pregnancies lasts more than 287 days?
(b) What proportion of pregnancies lasts between 257 and 272 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 239 days. Are very preterm babies unusual?
(a) The proportion of pregnancies that last more than 287 days is
(Round to four decimal places as needed.)
(b) The proportion of pregnancies that last between 257 and 272 days is
(Round to four decimal places as needed.)
(...)
(d) The probability of a "very preterm" baby is
than 0.05.
(Round to four decimal places as needed.)
(c) The probability that a randomly selected pregnancy lasts no more than 263 days is
(Round to four decimal places as needed.)
|||
=
Vo) 1
LE2 ... 46 ...
This event
O
unusual because the probability is
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