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 11PS

A Nielsen study indicates that 18-to 34-year olds spend a mean of 93 minutes watching video on their smartphones per week.

Assume that the amount of time watching video on a smartphone per week is normally distributed and that standard deviation is 15 minutes.

a. What is the probability that an 18- to 34-year-old spends less than 77 minutes watching video on his or her smartphone per week?

b. What is the probability that an 18-to 34-year -old spends between 77 minutes and 109 minutes video on his or her smartphone per week?

c. What is the probability that an 18-to 34-year -old spends more than 109 minutes watching video on his or her smartphone per week?

d. One percent of all 18- to 34-year- olds will spend less than how many minutes watching video on her smartphone per week?

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 10PS

Chapter 6, Problem 12PS

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 an 18-to-34-year-old spends less than 77 minutes watching video on the smart phone per week. The required probability is 0.1423.

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Chapter 6 Solutions