Statistical Techniques in Business and Economics

18th Edition

ISBN: 9781260579611

Author: Douglas Lind; William Marchal; Samuel Wathen

Publisher: MCGRAW-HILL HIGHER EDUCATION

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Textbook Question

Chapter 7, Problem 4SR

The temperature of coffee sold at the Coffee Bean Cafe follows the normal probability distribution, with a mean of 150 degrees. The standard deviation of this distribution is 5 degrees.

(a) What is the probability that the coffee temperature is between 150 degrees and 154 degrees?
(b) What is the probability that the coffee temperature is more than 164 degrees?

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 7, Problem 12E

Chapter 7, Problem 13E

Chapter 7 Solutions

Statistical Techniques in Business and Economics

Ch. 7 - Microwave ovens only last so long. The life-time...Ch. 7 - Prob. 1E Ch. 7 - Prob. 2E Ch. 7 - Prob. 3E Ch. 7 - Prob. 4E Ch. 7 - Prob. 5E Ch. 7 - Prob. 6E Ch. 7 - Prob. 2SR Ch. 7 - The distribution of the annual incomes of a group...Ch. 7 - Explain what is meant by this statement: There is...

Ch. 7 - List the major characteristics of a normal...Ch. 7 - The mean of a normal probability distribution is...Ch. 7 - The mean of a normal probability distribution is...Ch. 7 - Prob. 11E Ch. 7 - Prob. 12E Ch. 7 - The temperature of coffee sold at the Coffee Bean...Ch. 7 - A normal population has a mean of 20.0 and a...Ch. 7 - A normal population has a mean of 12.2 and a...Ch. 7 - Prob. 15E Ch. 7 - The mean of a normal probability distribution is...Ch. 7 - Prob. 5SR Ch. 7 - Prob. 17E Ch. 7 - A normal population has a mean of 80.0 and a...Ch. 7 - Prob. 19E Ch. 7 - Prob. 20E Ch. 7 - WNAE, an all-news AM station, finds that the...Ch. 7 - Prob. 22E Ch. 7 - Prob. 6SR Ch. 7 - A normal distribution has a mean of 50 and a...Ch. 7 - Prob. 24E Ch. 7 - Prob. 25E Ch. 7 - Prob. 26E Ch. 7 - Prob. 27E Ch. 7 - Prob. 28E Ch. 7 - Prob. 29E Ch. 7 - Prob. 30E Ch. 7 - Prob. 7SR Ch. 7 - Prob. 31E Ch. 7 - The lifetime of LCD TV sets follows an exponential...Ch. 7 - Prob. 33E Ch. 7 - Prob. 34E Ch. 7 - Prob. 35CE Ch. 7 - Prob. 36CE Ch. 7 - Prob. 37CE Ch. 7 - Prob. 38CE Ch. 7 - Prob. 39CE Ch. 7 - Prob. 40CE Ch. 7 - Prob. 41CE Ch. 7 - Prob. 42CE Ch. 7 - Prob. 43CE Ch. 7 - Prob. 44CE Ch. 7 - Shaver Manufacturing Inc. offers dental insurance...Ch. 7 - The annual commissions earned by sales...Ch. 7 - Prob. 47CE Ch. 7 - Prob. 48CE Ch. 7 - Management at Gordon Electronics is considering...Ch. 7 - Fast Service Truck Lines uses the Ford Super Duty...Ch. 7 - Prob. 51CE Ch. 7 - Prob. 52CE Ch. 7 - The weights of canned hams processed at Henline...Ch. 7 - The price of shares of Bank of Florida at the end...Ch. 7 - Prob. 55CE Ch. 7 - Prob. 56CE Ch. 7 - Prob. 57CE Ch. 7 - Prob. 58CE Ch. 7 - Prob. 59CE Ch. 7 - Prob. 61DA Ch. 7 - Prob. 62DA Ch. 7 - Prob. 1P Ch. 7 - Prob. 2P Ch. 7 - Prob. 3P Ch. 7 - Prob. 4P Ch. 7 - Prob. 5P Ch. 7 - Prob. 6P Ch. 7 - Prob. 1C Ch. 7 - Prob. 2C Ch. 7 - Prob. 3C Ch. 7 - Prob. 4C Ch. 7 - Prob. 5C Ch. 7 - Prob. 1.1PT Ch. 7 - Prob. 1.2PT Ch. 7 - Prob. 1.3PT Ch. 7 - Prob. 1.4PT Ch. 7 - Prob. 1.5PT Ch. 7 - Prob. 1.6PT Ch. 7 - Which of the following is NOT a requirement of the...Ch. 7 - Prob. 1.8PT Ch. 7 - How many standard normal distributions are there?...Ch. 7 - Prob. 1.10PT Ch. 7 - Prob. 1.11PT Ch. 7 - Prob. 1.12PT Ch. 7 - Prob. 1.13PT Ch. 7 - Prob. 1.14PT Ch. 7 - Prob. 1.15PT Ch. 7 - Prob. 2.1PT Ch. 7 - Prob. 2.2PT Ch. 7 - Prob. 2.3PT Ch. 7 - Prob. 2.4PT Ch. 7 - Prob. 2.5PT Ch. 7 - Prob. 2.6PT Ch. 7 - Prob. 2.7PT

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