Answered: most exhibition shows open early in the…

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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most exhibition shows open early in the morning and closes late in the evening. a study of Saturday arrival times showed that the average time was 3 hours and 48 minutes after the doors opened, and the standard deviation was estimated to about 52 minutes. assume the arrival times follow a normal distribution.

a) what time after the doors opened will 90% of the people who are coming to the Saturday show have arrived?

b) what time after the doors open will only 15% of the people who are coming to the Saturday show will have arrived?

c) do you think that the probability distribution of arrival times for Friday might be different from Saturday? explain why?

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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