1. The Citizens Banking Company is studying the number of times the ATM located in a Loblaws Supermarket at the foot of Market Street is used per day. Following are the numbers of times the machine was used over each of the last 30 days. Determine the mean number of times the machine was used per day.
|
83 |
64 |
84 |
76 |
84 |
54 |
75 |
59 |
70 |
61 |
|
63 |
80 |
84 |
73 |
68 |
52 |
65 |
90 |
52 |
77 |
|
95 |
36 |
78 |
61 |
59 |
84 |
95 |
47 |
87 |
60 |
2. The American Automobile Association checks the prices of gasoline before many holiday weekends. Listed below are the self-service prices for a sample of 15 retail outlets during the May 2003 Memorial Day weekend in the Detroit, Michigan, area.
|
1.44 |
1.42 |
1.35 |
1.39 |
1.49 |
1.49 |
1.41 |
1.46 |
|
1.41 |
1.49 |
1.45 |
1.48 |
1.39 |
1.46 |
1.44 |
|
