Business Statistics: A First Course (8th Edition)
Business Statistics: A First Course (8th Edition)
8th Edition
ISBN: 9780135177785
Author: David M. Levine, Kathryn A. Szabat, David F. Stephan
Publisher: PEARSON
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Chapter 4, Problem 4.43AC
To determine

To find: the number of different ways to assign the four people to the four positions.

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iid 1. The CLT provides an approximate sampling distribution for the arithmetic average Ỹ of a random sample Y₁, . . ., Yn f(y). The parameters of the approximate sampling distribution depend on the mean and variance of the underlying random variables (i.e., the population mean and variance). The approximation can be written to emphasize this, using the expec- tation and variance of one of the random variables in the sample instead of the parameters μ, 02: YNEY, · (1 (EY,, varyi n For the following population distributions f, write the approximate distribution of the sample mean. (a) Exponential with rate ẞ: f(y) = ß exp{−ßy} 1 (b) Chi-square with degrees of freedom: f(y) = ( 4 ) 2 y = exp { — ½/ } г( (c) Poisson with rate λ: P(Y = y) = exp(-\} > y! y²
2. Let Y₁,……., Y be a random sample with common mean μ and common variance σ². Use the CLT to write an expression approximating the CDF P(Ỹ ≤ x) in terms of µ, σ² and n, and the standard normal CDF Fz(·).
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Chapter 4 Solutions

Business Statistics: A First Course (8th Edition)

Ch. 4 - Referring to the contingency table in problem...Ch. 4 - Have the gains in student learning attributed to...Ch. 4 - Do Generation X and Boomers differ in how they use...Ch. 4 - A survey of 1 ,520 Americans adults asked, Do you...Ch. 4 - Each year, ratings are compiled concerning the...Ch. 4 - Prob. 4.16LBCh. 4 - Prob. 4.17LBCh. 4 - Prob. 4.18LBCh. 4 - Prob. 4.19LBCh. 4 - Prob. 4.20LBCh. 4 - Prob. 4.21ACCh. 4 - Prob. 4.22ACCh. 4 - Prob. 4.23ACCh. 4 - Prob. 4.24ACCh. 4 - Prob. 4.25ACCh. 4 - Prob. 4.26ACCh. 4 - Prob. 4.27ACCh. 4 - A standard deck of cards is being used to play a...Ch. 4 - Prob. 4.29ACCh. 4 - Prob. 4.30LBCh. 4 - Prob. 4.31LBCh. 4 - Prob. 4.32ACCh. 4 - Big Commerce launched a study to analyze modem,...Ch. 4 - Olive Construction Company is determining whether...Ch. 4 - Prob. 4.35ACCh. 4 - Prob. 4.36ACCh. 4 - Prob. 4.37ACCh. 4 - Prob. 4.38ACCh. 4 - A lock on a bank vault consists of three dials,...Ch. 4 - If a coin is tossed seven times, how many...Ch. 4 - A particular brand of womens jeans is available in...Ch. 4 - Prob. 4.42ACCh. 4 - Prob. 4.43ACCh. 4 - Prob. 4.44ACCh. 4 - Prob. 4.45ACCh. 4 - Prob. 4.46ACCh. 4 - Prob. 4.47ACCh. 4 - Prob. 4.48ACCh. 4 - Prob. 4.49ACCh. 4 - Prob. 4.50ACCh. 4 - Prob. 4.51ACCh. 4 - Prob. 4.52CYUCh. 4 - Prob. 4.53CYUCh. 4 - Prob. 4.54CYUCh. 4 - What is the difference between mutually exclusive...Ch. 4 - Prob. 4.56CYUCh. 4 - Prob. 4.57CYUCh. 4 - Prob. 4.58CYUCh. 4 - Prob. 4.59CYUCh. 4 - Prob. 4.60CYUCh. 4 - Prob. 4.61CYUCh. 4 - Prob. 4.62CRPCh. 4 - Chartered Institute of Personnel and Development...Ch. 4 - Prob. 4.64CRPCh. 4 - Prob. 4.65CRPCh. 4 - The CMO Survey collects and disseminates the...
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