Solution Found!
Suppose that a random sample of 25 items is selected from the machine of Exercise 7.72
Chapter 7, Problem 7.79(choose chapter or problem)
Suppose that a random sample of 25 items is selected from the machine of Exercise 7.72. If the machine produces 10% defectives, find the probability that the sample will contain at least two defectives, by using the following methods: a The normal approximation to the binomial b The exact binomial tables
Questions & Answers
QUESTION:
Suppose that a random sample of 25 items is selected from the machine of Exercise 7.72. If the machine produces 10% defectives, find the probability that the sample will contain at least two defectives, by using the following methods: a The normal approximation to the binomial b The exact binomial tables
ANSWER:Step 1 of 3
(a)
Denote with the number of defectives in the sample of .
We have that .