The lengths of a particular animal's pregnancies are approximately normally distributed, with meanμ=267 days and standard deviation σ=16 days. (a) What proportion of pregnancies lasts more than 279 days? (b) What proportion of pregnancies lasts between 247 and 275 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 243 days? A "very preterm" baby is one whose gestation period is less than 231 days. Are very preterm babies unusual? (Round to four decimal places as needed.)

Answered: The lengths of a particular animal's…

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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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean

μ=267 days and standard deviation σ=16 days.

(a) What proportion of pregnancies lasts more than 279 days?

(b) What proportion of pregnancies lasts between 247 and 275 days?

A "very preterm" baby is one whose gestation period is less than 231 days. Are very preterm babies unusual?

(Round to four decimal places as needed.)

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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