Fundamentals of Statistics (5th Edition)

5th Edition

ISBN: 9780134508306

Author: Michael Sullivan III

Publisher: PEARSON

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Chapter B.2, Problem 12AYU

Travel Taxes Travelers pay taxes for flying, car rentals, and hotels. The data in the next column represent the total travel tax for a 3-day business trip in eight randomly selected cities. Note: Chicago has the highest travel taxes in the country at $101.27. In Problem 32 from Section 9.2, it was verified that the data are normally distributed and that s = 12.324 dollars. Construct and interpret a 90% confidence interval for the standard deviation travel tax for a 3-day business trip.

67.81	78.69	68.99	84.36
80.24	86.14	101.27	99.29

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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Chapter B.2, Problem 11AYU

Chapter B.2, Problem 13AYU

Chapter B.2 Solutions

Fundamentals of Statistics (5th Edition)

Ch. B.2 - True or False: The chi-square distribution is...Ch. B.2 - Prob. 2AYU Ch. B.2 - Prob. 3AYU Ch. B.2 - Prob. 4AYU Ch. B.2 - Prob. 5AYU Ch. B.2 - Prob. 6AYU Ch. B.2 - In Problems 58, find the critical values 1/22 and...Ch. B.2 - Prob. 8AYU Ch. B.2 - Prob. 9AYU Ch. B.2 - A simple random sample of size n is drawn from a...

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Solution Summary: The author explains the 90% confidence interval for standard deviation travel tax for a three-day business trip in eight random selected cities.

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Chapter B.2 Solutions