December 12, 2023
Name:
Instructions: You can do these questions prior to the exam if you desire. You may work with others in the class or use any other resources, but you must write out your own answers to be submitted with the in-class portion of the exam. Alternatively, you can complete these questions during the in-class exam time, but at that time you will be required to work under normal exam conditions (on your own, no internet, etc.). You must show all work for each question. Please turn in both parts of the exam when you are finished.
17) Complete the following contingency table by filling in the expected values for each cell. (4pts)
Boots Clogs Row Total
Lemonade 7 11 18
Iced Tea 18 14 32
Column Total 25 25 50
18) We asked 100 people what kind of pet they prefer. The results of our sample are below. Perform the appropriate test at the a = 0.01 level to determine whether pet preference is equally distributed in the population, i.e. whether 25% of people prefer each type of pet. (7pts)
Dog Cat Turtle Bird Total
Observed 35 30 15 20 100
Expected 25 25 25 25 100