A random sample of 20 widgets was examined, 4 widgets out of these 20 are found to be defective. What is the probability that the machine had been shaken? Hint: What is the probability of finding 4 defective widgets in a sample of 20, if (given) the machine has been shaken? What is the probability of finding 4 defective widgets in a sample of 20, if (given) the machine has not been shaken? (b)

A random sample of 20 widgets was examined, 4 widgets out of these 20 are found to be defective. What is the probability that the machine had been shaken? Hint: What is the probability of finding 4 defective widgets in a sample of 20, if (given) the machine has been shaken? What is the probability of finding 4 defective widgets in a sample of 20, if (given) the machine has not been shaken? (b)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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