BEGINNING STATISTICS
BEGINNING STATISTICS
2nd Edition
ISBN: 9781941552513
Author: WARREN
Publisher: Hawkes Learning
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Chapter 7.2, Problem 18E
To determine

To find:

The probability that the mean amount spent on Christmas gifts for a sample of 500 families differs from the population mean by less than $15.

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Question: we know that for rt. (x+ys s ا. 13. rs. and my so using this, show that it vye and EIXI, EIYO This : E (IX + Y) ≤2" (EIX (" + Ely!")
Theorem 2.4 (The Hölder inequality) Let p+q=1. If E|X|P < ∞ and E|Y| < ∞, then . |EXY ≤ E|XY|||X|| ||||q
Theorem 7.6 (Etemadi's inequality) Let X1, X2, X, be independent random variables. Then, for all x > 0, P(max |S|>3x) ≤3 max P(S| > x). Isk≤n

Chapter 7 Solutions

BEGINNING STATISTICS

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