The lengths of a particular animal's pregnancies are approximately normally distributed, with mean = 271 days and standard deviation o = 20 days. (a) What proportion of pregnancies lasts more than 306 days? (b) What proportion of pregnancies lasts between 266 and 276 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 221 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 306 days is 0.0400. (Round to four decimal places as needed.) (b) The proportion of pregnancies that last between 266 and 276 days is 0.1974. (Round to four decimal places as needed.) (c) The probability that a randomly selected pregnancy lasts no more than 246 days is 0.1056. (Round to four decimal places as needed.) (d) A "very preterm" baby is one whose gestation period is less than 221 days. Are very preterm babies unusual? The probability of this event is (Round to four decimal places as needed.) so it V be unusual because the probability is than 0.05,

The lengths of a particular animal's pregnancies are approximately normally distributed, with mean = 271 days and standard deviation o = 20 days. (a) What proportion of pregnancies lasts more than 306 days? (b) What proportion of pregnancies lasts between 266 and 276 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 221 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 306 days is 0.0400. (Round to four decimal places as needed.) (b) The proportion of pregnancies that last between 266 and 276 days is 0.1974. (Round to four decimal places as needed.) (c) The probability that a randomly selected pregnancy lasts no more than 246 days is 0.1056. (Round to four decimal places as needed.) (d) A "very preterm" baby is one whose gestation period is less than 221 days. Are very preterm babies unusual? The probability of this event is (Round to four decimal places as needed.) so it V be unusual because the probability is than 0.05,

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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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean µ= 271 days and standard deviation o = 20 days.
(a) What proportion of pregnancies lasts more than 306 days?
(b) What proportion of pregnancies lasts between 266 and 276 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 221 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 306 days is 0.0400.
(Round to four decimal places as needed.)
(b) The proportion of pregnancies that last between 266 and 276 days is 0.1974.
(Round to four decimal places as needed.)
(c) The probability that a randomly selected pregnancy lasts no more than 246 days is 0.1056.
(Round to four decimal places as needed.)
(d) A "very preterm" baby is one whose gestation period is less than 221 days. Are very preterm babies unusual?
The probability of this event is , so it
be unusual because the probability is
than 0.05.
(Round to four decimal places as needed.)
Enter your answer in the answer box and then click Check Answer.
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