Chris is a salesperson who makes five sales calls each day to potential customers. Either the customers make a purchase from Chris or they do not. The following table shows the number of days over the past 400 that Chris had 0, 1, 2, 3, 4, or 5 purchases per day.

Number of Purchases Per Day Frequency 0 98 1 157 2 106 3 36 4 3 5 0 Total 400

a. Using a = 0.05, perform a chi-square test to determine if the number of purchases per day follows the binomial probability distribution, with the probability of a customer making a purchase being equal to 25%.

b. Determine the p-value using Excel and interpret its meaning.

AppendixLO1