Answered: The lengths of pregnancies in a small…

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 pregnancies in a small rural village are normally distributed with a mean of 261 days and a standard deviation of 12 days.

In what range would you expect to find the middle 95% of most pregnancies?Round to the nearest whole number.
Between ______ and ______ .

If you were to draw samples of size 51 from this population, in what range would you expect to find the middle 95% of most averages for the lengths of pregnancies in the sample? Round to 1 decimal place.
Between _______ and _______ .

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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