# Question

A salesperson makes four calls per day. A sample of 100 days gives the following frequencies of sales volumes.

Records show sales are made to 30% of all sales calls. Assuming independent sales calls, the number of sales per day should follow a binomial distribution. The binomial probability function presented in Chapter 5 is

For this exercise, assume that the population has a binomial distribution with n = 4, p = .30, and x = 0, 1, 2, 3, and 4.

a. Compute the expected frequencies for x = 0, 1, 2, 3, and 4 by using the binomial probability function. Combine categories if necessary to satisfy the requirement that the expected frequency is five or more for all categories.

b. Use the goodness of fit test to determine whether the assumption of a binomial distribution should be rejected. Use α = .05. Because no parameters of the binomial distribution were estimated from the sample data, the degrees of freedom are k = 1 when k is the number of categories.

Records show sales are made to 30% of all sales calls. Assuming independent sales calls, the number of sales per day should follow a binomial distribution. The binomial probability function presented in Chapter 5 is

For this exercise, assume that the population has a binomial distribution with n = 4, p = .30, and x = 0, 1, 2, 3, and 4.

a. Compute the expected frequencies for x = 0, 1, 2, 3, and 4 by using the binomial probability function. Combine categories if necessary to satisfy the requirement that the expected frequency is five or more for all categories.

b. Use the goodness of fit test to determine whether the assumption of a binomial distribution should be rejected. Use α = .05. Because no parameters of the binomial distribution were estimated from the sample data, the degrees of freedom are k = 1 when k is the number of categories.

## Answer to relevant Questions

M&M/MARS, makers of M&M® chocolate candies, conducted a national poll in which more than 10 million people indicated their preference for a new color. The tally of this poll resulted in the replacement of tan-colored M&Ms ...The following 2 x 3 contingency table contains observed frequencies for a sample of 200. Test for independence of the row and column variables using the x2 test with α = .05. The International League of Triple-A minor league baseball consists of 14 teams organized into three divisions: North, South, and West. The following data show the average attendance for the 14 teams in the International ...A factorial experiment involving two levels of factor A and three levels of factor B resulted in the following data. Test for any significant main effects and any interaction. Use α .05. A factorial experiment was designed to test for any significant differences in the time needed to perform English to foreign language translations with two computerized language translators. Because the type of language ...Post your question

0