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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Textbook Question

Chapter 7, Problem 29PS

In problem 7.28, suppose that the mean amount of juice squeezed is 5.0 ounces.

a. What is probability that sample mean amount of juice will be at least 4.60 ounces?

b. The probability is 70 % that the sample mean amount of juice will be contained between what two values symmetrically distributed around the population mean?

c. The probability is 77 % that the sample mean amount of juice will be contained between what two values symmetrically distributed around the population mean?

d. Compare the results of (a) through (c) with the results of Problem 7.28 (a) through (c).

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 28PS

Chapter 7, Problem 30PS

Chapter 7 Solutions

Basic Business Statistics, Student Value Edition

Ch. 7 - Given a normal distribution with =100and=10, if...Ch. 7 - Given a normal distribution with =50and=5, if you...Ch. 7 - For each of the following three populations,...Ch. 7 - The following data represent the number of days...Ch. 7 - The amount of water in a two-liter bottle is...Ch. 7 - The weight of an energy bar is approximately...Ch. 7 - The diameter of a brand of tennis balls is...Ch. 7 - The U.S. Census Bureau announced that the median...Ch. 7 - According to a report by App Annie, a business...Ch. 7 - According to the National Survey of Student...

Ch. 7 - In a random sample of 64 people, 48 are classified...Ch. 7 - A random sample of 50 households was selected for...Ch. 7 - The following data represent the responses (Y for...Ch. 7 - A political pollster is conducting an analysis of...Ch. 7 - You plan to conduct a marketing experiment in...Ch. 7 - What do millennials around the world want in a...Ch. 7 - The goal of corporate sustainability is to manage...Ch. 7 - Prob. 18PS Ch. 7 - The topic of global warming increasingly appears...Ch. 7 - An IAB study on the state of original digital...Ch. 7 - Why is the sample mean an unbiased estimator of...Ch. 7 - Why does the standard error of the mean decrease...Ch. 7 - Why does the sampling distribution of the mean...Ch. 7 - What is the difference between a population...Ch. 7 - Under what circumstances does the sampling...Ch. 7 - An industrial sewing machine uses ball bearings...Ch. 7 - The fill amount of bottles of a soft drinks is...Ch. 7 - Prob. 28PS Ch. 7 - In problem 7.28, suppose that the mean amount of...Ch. 7 - Prob. 30PS Ch. 7 - The article mentioned in Problem 7.30 reported...

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Solution Summary: The author determines probability that the sample mean amount will be at least 4.60 ounces. The required probability is 1.

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Chapter 7 Solutions