A9 10

Assignment9.xlsx

Problem Set 4

Problem 1 (8 points). The cities of Springfield and Shelbyville both have softball teams.				Problem 2 (7 points). Suppose hypothetical two police departments are comparing the average age of their squad cars.
The players on these two teams care more about scoring runs than they do about actually winning the games (they don’t really play any defense).				Each police department randomly selects a sample of 15 squad cars and notes the age of each vehicle.
Statistically speaking, did one team score significantly more runs than the other?				Can we say with 95% confidence that Burlington has an older set of squad cars than Manchester?
Note that Shelbyville played more games because two of Springfield’s games were cancelled because of rain.
				Burlington	Manchester		Type answers below.
Shelbyville	Springfield		Type answers below.	4	4	Question Hypothesis H0
8	3	Your Name		9	3	Question Hypothesis H1
7	2	Question Hypothesis H0		6	3	Intermediate Hypothesis H0
5	4	Question Hypothesis H1		9	6	Intermediate Hypothesis H1
5	6	Intermediate Hypothesis H0		2	3	Level of Confidence
3	4	Intermediate Hypothesis H1		1	5	Alpha Level
3	15	Level of Confidence		9	5	Variance for x1
0	10	Alpha Level		10	5	Variance for x2
2	2	Variance for x1		7	5	Did you reject H0 in your Intermediate Hypothesis?
4	8	Variance for x2		7	2	Did you reject H0 in your Question Hypothesis?
13	0	Did you reject H0 in your Intermediate Hypothesis?		11	3	Interpretation
11	8	Did you reject H0 in your Question Hypothesis?		3	5
10		Interpretation		5	3
1				9	6
				8	2
			Go on to the second problem -->				Please save the file when finished and upload it to the D2L Assignment #9 Assignment Dropbox.