SCENARIO 7-4
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.
-Referring to Scenario 7-4,the requirements for using a normal distribution to approximate a binomial distribution is fulfilled.

Question

Quizplus · Accepted Answer

The requirements for using a normal distribution to approximate a binomial distribution are:
1. The number of trials (n) is large (usually greater than or equal to 30).
2. The probability of success (p) is not too close to 0 or 1 (usually between 0.1 and 0.9).
In this scenario, the sample size is 50, which is greater than 30, and the probability of success (p) is 0.15, which is not too close to 0 or 1. Therefore, the requirements are fulfilled and we can use a normal distribution to approximate the binomial distribution.

SCENARIO 7-4 According to a Survey,only 15% of Customers Who Visited the Visited