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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean u=280 days and standard deviation a= 12 days (a) What proportion of pregnancies lasts more than 295 days? (b) What proportion of pregnancies lasts between 274 and 286 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 271 days? (d) A "very preterm" baby is one whose gestation period is less than 262 days. Are very preterm babies unusual? Click the icon to view a table of areas under the normal curve. (a) The proportion of pregnancies that last more than 295 days is 10.57 (Round to four decimal places as needed.) 2 C

The lengths of a particular animal's pregnancies are approximately normally distributed, with mean u=280 days and standard deviation a= 12 days (a) What proportion of pregnancies lasts more than 295 days? (b) What proportion of pregnancies lasts between 274 and 286 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 271 days? (d) A "very preterm" baby is one whose gestation period is less than 262 days. Are very preterm babies unusual? Click the icon to view a table of areas under the normal curve. (a) The proportion of pregnancies that last more than 295 days is 10.57 (Round to four decimal places as needed.) 2 C

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.CR: Chapter 13 Review
Problem 58CR
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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean u=280 days and standard deviation a = 12 days (a) What proportion of pregnancies lasts more than 295 days? (b) What proportion of pregnancies lasts between 274 and 286 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 271 days? (d) A "very preterm" baby is one whose gestation period is less than 262 days. Are very preterm babies unusual? Click the icon to view a table of areas under the normal curve. (a) The proportion of pregnancies that last more than 295 days is 10.57 (Round to four decimal places as needed.) View an example Get more help - CI
Transcribed Image Text:The lengths of a particular animal's pregnancies are approximately normally distributed, with mean u=280 days and standard deviation a = 12 days (a) What proportion of pregnancies lasts more than 295 days? (b) What proportion of pregnancies lasts between 274 and 286 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 271 days? (d) A "very preterm" baby is one whose gestation period is less than 262 days. Are very preterm babies unusual? Click the icon to view a table of areas under the normal curve. (a) The proportion of pregnancies that last more than 295 days is 10.57 (Round to four decimal places as needed.) View an example Get more help - CI
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