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1. A gambler suspects that a die is loaded. She rolls the die 60 times and gets the following results.
Face 






Count 






2. A study was conducted to see if a student's year in school had any effect on how well they did in their classes. The following data for all the students in all their classes was obtained from the Registrar.

A 
B 
C 
D 
F 
Fresh 
1569 
1567 
1214 
432 
987 
Soph 
1484 
1581 
1322 
212 
643 
Jun 
1592 
1609 
1472 
153 
421 
Sen 
1685 
1623 
1211 
75 
315 
Use a chisquare test to determine if there is a significant difference between the grades received by students in different classes.
3. An Environmental Studies class did a survey to determine the relation between engine size and fuel consumption. They obtained the following data for five types of cars.
Car 
Size 
MPG 
A 
1.6 
38 
B 
1.8 
29 
C 
2.2 
32 
D 
3.2 
24 
E 
4.7 
17 
where the engine size is given in liters and the mileage is given in miles per gallon. The question is whether engine size has an effect on gasoline mileage.