Question

• Put each problem on a separate worksheet in an Excel file. Type the tabular data into the spreadsheet
• Make Excel do all of the necessary calculations
• Use the probability notation p(A), p(Aand B),… etc

1. The owner of a family style restaurant in downtown Pittsburgh was interested in studying customer entrée and dessert orders. Records were maintained for a weekend time period: results in the table below.

	Ordered Beef Entree
Ordered Dessert	Yes	No	Total
Yes	71	65
No	116	348
Total

g. We know that customer X ordered beef, what is the probability that he ordered dessert?

h. We know that customer Y ordered dessert, what is the probability that she ordered beef?

i. Are the events Ordered Dessert and Ordered Beef independent? Show the test.

Answer 1