Answered: Airlines for America (A4A) report that…

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....

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Airlines for America (A4A) report that a family of four planning to travel over the holiday break (between December 25 and January 02) will spend an average of 3500.00 on airfare. Assume that the amount spent is normally distributed with a standard deviation of 750.00. 1-A. What is the probability that a family of four will spend 2000.00 or less for airfare over the holiday break? 1-B. What is the probability that a family of four will spend $4500.00 or more for airfare over the holiday break? 1-C. What is the probability that a family of four will spend between $2000.00 and $4500.00 on airfare over the holiday break?

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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