SCENARIO 7-8
According to a survey,only 15% of customers who visited the web site of a major retail store made a purchase.Random samples of size 50 are selected from a population of 900.Use the finite population correction factor.
-Referring to Scenario 7-8,the requirements for using a normal distribution to approximate a binomial distribution is fulfilled.

Question

Quizplus · Accepted Answer

The sample size is large enough (n=50) and the success-failure condition is met (15% of 900 is greater than 10 and 85% of 900 is also greater than 10), so the requirements for using a normal distribution to approximate a binomial distribution are fulfilled. The finite population correction factor is needed because the sample is taken from a small fraction of the population (n/N < 0.05).

SCENARIO 7-8 According to a Survey,only 15% of Customers Who Visited the Visited