Answered: The average electricity bill for…

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 average electricity bill for residents of Seaside is $72.54 with a standard deviation of $9.66. Assume the population of electricity bill amounts are normally distributed.

What is the probability that a randomly selected electricity bill for a resident of Seaside will be between $60 and $80?

Show how you calculated your result here (type in what you typed on your calculator or computer, the function used on the calculator/computer with value input, etc)

Calculation: ____________

Now type in your final simplified or rounded answer, if necessary round your answer to four decimal places.

P( $60 < x < $80 ) = _____________

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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