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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean mu = 273 days and standard deviation sigma = 16days (a) What proportion of pregnancies lasts more than 281 days? (b) What proportion of pregnancies lasts between 253 and 285 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 265 days

The lengths of a particular animal's pregnancies are approximately normally distributed, with mean mu = 273 days and standard deviation sigma = 16days (a) What proportion of pregnancies lasts more than 281 days? (b) What proportion of pregnancies lasts between 253 and 285 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 265 days

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 65CR
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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean mu = 273 days and standard deviation sigma = 16days

(a) What proportion of pregnancies lasts more than 281 days?

(b) What proportion of pregnancies lasts between 253 and 285 days?

(c) What is the probability that a randomly selected pregnancy lasts no more than 265 days

(d) A very preterm" baby is one whose gestation period is less than 233 days. Are very preterm babies unusual?

The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ = 273 days and standard deviation o = 16 days. (a) What proportion of pregnancies lasts more than 281 days? (b) What proportion of pregnancies lasts between 253 and 285 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 265 days? (d) A "very preterm" baby is one whose gestation period is less than 233 days. Are very preterm babies unusual? (a) The proportion of pregnancies that last more than 281 days is. (Round to four decimal places as needed.) (b) The proportion of pregnancies that last between 253 and 285 days is (Round to four decimal places as needed.) (c) The probability that a randomly selected pregnancy lasts no more than 265 days is (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.) unusual because the probability is than 0.05.
Transcribed Image Text:The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ = 273 days and standard deviation o = 16 days. (a) What proportion of pregnancies lasts more than 281 days? (b) What proportion of pregnancies lasts between 253 and 285 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 265 days? (d) A "very preterm" baby is one whose gestation period is less than 233 days. Are very preterm babies unusual? (a) The proportion of pregnancies that last more than 281 days is. (Round to four decimal places as needed.) (b) The proportion of pregnancies that last between 253 and 285 days is (Round to four decimal places as needed.) (c) The probability that a randomly selected pregnancy lasts no more than 265 days is (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.) unusual because the probability is than 0.05.
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ISBN:
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