Answered: Clinton. The standard deviation was…

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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This is a normal distribution problem

In the 1992 presidential election, Alaska's 40 election districts averaged 1966 votes per district for President Clinton. The standard deviation was 555. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places.

The image displays two statistical questions related to votes for President Clinton:

d. Find the probability that a randomly selected district had between 2157 and 2428 votes for President Clinton.
[Text Box for Answer]

e. Find the first quartile for votes for President Clinton. Round your answer to the nearest whole number.
[Text Box for Answer]

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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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