Answered: The XO Group conducted a 2015 survey of…

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 XO Group conducted a 2015 survey of 13,000 brides and grooms married in the United States and found that the average cost of a wedding is $29,858. Assume that the cost of a wedding is normally distributed with a mean of $29,858 and a standard deviation of $5,600.

a. What is the probability that a wedding costs less than $20,000? (put this answer in Blank 1).

b. What is the probability that a wedding costs between $20,000 and $30,000? (put this answer in Blank 2).

c. For a wedding to be among the 5% most expensive, how much would it have to cost? (put this answer in Blank 3).

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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