A company wants to determine whether the number of buyers spread over 5 stores owned is evenly distributed or not. The following is buyer data at the 5 stores:

Number of Buyers : Store A = 18 Store B = 18 Store C = 20 Store D = 32 Store E = 32

Total : 120

Calculate chi square statistics.

Answer:

a. Less than 1

b. at least 1, but less than 5

c. at least 5, but less than 8

d. at least 8, but less than 14

e. at least 14

The answer is D, please explain.