(8) A company produces X bulbs per day. If E(X) = 1000 and var (X) = 100, then P(900 < X < 1100) is at least: 100 (b) 900 @ 100 900 (d) 99 100

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Question
(8)
A company produces X bulbs per day. If E(X) = 1000 and var (X) = 100,
then P(900 < X < 1100) is at least:
100
(b)
1
900
O
100
900
(d)
99
100
Transcribed Image Text:(8) A company produces X bulbs per day. If E(X) = 1000 and var (X) = 100, then P(900 < X < 1100) is at least: 100 (b) 1 900 O 100 900 (d) 99 100
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