The cross-tabulation data given below show the number of people who rated a customer service representative as friendly and polite based on whether the representative greeted them first. Complete parts a through d below.

	Friendliness/Politeness
Staff Greeting	No	Yes
No	10	7
Yes	12	19

a. WritFind the expected frequencies. b. Find the expected frequencies.

c. Compute the chi-square statistic.

d. Find the chi-square critical value and p-value and draw a conclusion using a level of significance of 0.01