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A lot containing 7 components is sampled by quality inspector. The lot contains 4 good components and 3 defective components. Sample of 3 is taken by the inspector. Let X represent the number of good components ir sample. Probaḥility distribution of X is f( x)= (3-х ,x=0,1,2,3 6) 7 What is the expected value of the number of good components in this sample? A.) 1 B.)2 C.)3 D.)4 What is the variance of discrete random variable. A.) 25/49 B.) 24/49 C.) 23/49 D.) 21/49 standard deviation of the discrete random variable? A.) 2 square root 6/7 B.) 2 square root 5/7 C.) 2 square root 4/7 D.) 2 square root 3/7

A lot containing 7 components is sampled by quality inspector. The lot contains 4 good components and 3 defective components. Sample of 3 is taken by the inspector. Let X represent the number of good components ir sample. Probaḥility distribution of X is f( x)= (3-х ,x=0,1,2,3 6) 7 What is the expected value of the number of good components in this sample? A.) 1 B.)2 C.)3 D.)4 What is the variance of discrete random variable. A.) 25/49 B.) 24/49 C.) 23/49 D.) 21/49 standard deviation of the discrete random variable? A.) 2 square root 6/7 B.) 2 square root 5/7 C.) 2 square root 4/7 D.) 2 square root 3/7

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A lot containing 7 components is sampled by a quality inspector. The lot contains 4 good components and 3 defective components. Sample of 3 is taken by the inspector. Let X represent the number of good components in sample. Probaḥility distribution of X is f( x)= 3-х x=0,1,2,3 7 What is the expected value of the number of good components in this sample? A.) 1 B.)2 C.)3 D.)4 What is the variance of discrete random variable. A.) 25/49 B.) 24/49 C.) 23/49 D.) 21/49 standard deviation of the discrete random variable? A.) 2 square root 6/ 7 B.) 2 square root 5/7 C.) 2 square root 4/7 D.) 2 square root 3/7
Transcribed Image Text:A lot containing 7 components is sampled by a quality inspector. The lot contains 4 good components and 3 defective components. Sample of 3 is taken by the inspector. Let X represent the number of good components in sample. Probaḥility distribution of X is f( x)= 3-х x=0,1,2,3 7 What is the expected value of the number of good components in this sample? A.) 1 B.)2 C.)3 D.)4 What is the variance of discrete random variable. A.) 25/49 B.) 24/49 C.) 23/49 D.) 21/49 standard deviation of the discrete random variable? A.) 2 square root 6/ 7 B.) 2 square root 5/7 C.) 2 square root 4/7 D.) 2 square root 3/7
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