Answered: The average time a person spends in a…

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 average time a person spends in a museum follows a normal distribution with ?=88 minutes and a variance of 16 min. These parameters are taken from a survey conducted to the visitors of the museum in a particular day. Suppose a sample consisting 9 visitors is selected, what is the probability that the average time these visitors spent in the museum is between 87 and 92 min?

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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