Answered: The record of births in a hospital…

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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Question

The record of births in a hospital collects information about the mother and within it collects the gain in weight of the mother during pregnancy (in pounds). According to the data obtained for 2010, the weight gain of the mothers during that year had a normal distribution with an average of 30.23 pounds and a standard deviation of 13.84 pounds.

If a mother from this population is randomly selected, what is the probability that during her pregnancy she has had a weight gain of less than 15 pounds?

A. (0.205, 0.442)

B. (0.4998, 0.7842)

C. 0.6420

D. (0.0422, 0.1958)

E. (0.4866, 0.7974)

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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