Basic Business Statistics, Student Value Edition

14th Edition

ISBN: 9780134685113

Author: Mark L. Berenson, David M. Levine, David F. Stephan, Kathryn Szabat

Publisher: PEARSON

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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Chapter 6, Problem 33PS

An industrial sewing machine uses ball bearing that are targeted to have a diameter of 0.75 inch. The lower and upper specification limits under which the ball bearing can operate are 0.74 inch and 0.76 inch, respectively. Past experience has indicated that the actual diameter of the ball bearings is approximately normally distributed, with a mean of 0.753 inch and a standard deviation of 0.004 inch. What is the probability that a ball bearing is

a. between the target and the actual mean?

b. between the lower specification limit and the target?

c. above the upper specification limit?

d. below the lower specification limit?

e. of all the ball bearings, 93% of the diameters are greater than what value?

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 6, Problem 32PS

Chapter 6, Problem 34PS

Chapter 6 Solutions

Basic Business Statistics, Student Value Edition

Ch. 6 - Given a standardized normal distribution (with a...Ch. 6 - Given a standard normal distribution (with a mean...Ch. 6 - Given a standardized normal distribution (with a...Ch. 6 - Given a standardized normal distribution (with a...Ch. 6 - Given a normal distribution with =100 and =10,...Ch. 6 - Given a normal distribution with =50 and =4, what...Ch. 6 - In 2015, the per capita consumption of bottled...Ch. 6 - Tobyâ€™s Trucking Company determined that the...Ch. 6 - Millennials spent an average of $103 on monthly...Ch. 6 - A Set of final examination grades in an...

Ch. 6 - A Nielsen study indicates that 18-to 34-year olds...Ch. 6 - In 2015, the per capita consumption of soft drinks...Ch. 6 - Many manufacturing problems involve the matching...Ch. 6 - Show that for a sample of n=39, the smallest and...Ch. 6 - For a sample of n=6, list the six Z values.Ch. 6 - The annual NFL Super Bowl is the most widely...Ch. 6 - As player salaries have increased, the cost of...Ch. 6 - The file Property Taxes contains the property...Ch. 6 - Prob. 19PS Ch. 6 - One operation of a mill is to cut pieces of steel...Ch. 6 - The file CD Rate contains the yields for a...Ch. 6 - The file Utility contains the electricity costs,...Ch. 6 - Suppose you select one value from a uniform...Ch. 6 - The time between arrivals of customer at a bank...Ch. 6 - A study of the time spent shopping in a...Ch. 6 - Prob. 26PS Ch. 6 - The Scheduled commuting time on the Long Island...Ch. 6 - Prob. 28PS Ch. 6 - Prob. 29PS Ch. 6 - Prob. 30PS Ch. 6 - Prob. 31PS Ch. 6 - Prob. 32PS Ch. 6 - An industrial sewing machine uses ball bearing...Ch. 6 - The fill amount in 2-liter soft drink bottles is...Ch. 6 - In an effort to reduce the number of bottles that...Ch. 6 - Prob. 36PS Ch. 6 - The file DomesticBeer Contains the percentage...Ch. 6 - Prob. 38PS Ch. 6 - The major stock market indexes had strong results...Ch. 6 - Interns report that when deciding on where to...Ch. 6 - According to the same Glassdoor source mentioned...

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Solution Summary: The author determines the probability that a ball bearing lies between the targeted diameter and actual mean. The required probability is 0.2734.

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Chapter 6 Solutions