1. Determine the mean and the standard deviation for the sample of 60 customers.
ID: 3219055 • Letter: 1
Question
1. Determine the mean and the standard deviation for the sample of 60 customers.
2. Develop a 95 percent confidence interval for the proportion of customers using these cards
Balance
ATM
Services
Debit
Interest
City
1756
13
4
0
1
2
748
9
2
1
0
1
1501
10
1
0
0
1
1831
10
4
0
1
3
1622
14
6
0
1
4
1886
17
3
0
1
1
740
6
3
0
0
3
1593
10
8
1
0
1
1169
6
4
0
0
4
2125
18
6
0
0
2
1554
12
6
1
0
3
1474
12
7
1
0
1
1913
6
5
0
0
1
1218
10
3
1
0
1
1006
12
4
0
0
1
2215
20
3
1
0
4
137
7
2
0
0
3
167
5
4
0
0
4
343
7
2
0
0
1
2557
20
7
1
0
4
2276
15
4
1
0
3
1494
11
2
0
1
1
2144
17
3
0
0
3
1995
10
7
0
0
2
1053
8
4
1
0
3
1526
8
4
0
1
2
1120
8
6
1
0
3
1838
7
5
1
1
3
1746
11
2
0
0
2
1616
10
4
1
1
2
1958
6
2
1
0
2
634
2
7
1
0
4
580
4
1
0
0
1
1320
4
5
1
0
1
1675
6
7
1
0
2
789
8
4
0
0
4
1735
12
7
0
1
3
1784
11
5
0
0
1
1326
16
8
0
0
3
2051
14
4
1
0
4
1044
7
5
1
0
1
1885
10
6
1
1
2
1790
11
4
0
1
3
765
4
3
0
0
4
1645
6
9
0
1
4
32
2
0
0
0
3
1266
11
7
0
0
4
890
7
1
0
1
1
2204
14
5
0
0
2
2409
16
8
0
0
2
1338
14
4
1
0
2
2076
12
5
1
0
2
1708
13
3
1
0
1
2138
18
5
0
1
4
2375
12
4
0
0
2
1455
9
5
1
1
3
1487
8
4
1
0
4
1125
6
4
1
0
2
1989
12
3
0
1
2
2156
14
5
1
0
2
Balance
ATM
Services
Debit
Interest
City
1756
13
4
0
1
2
748
9
2
1
0
1
1501
10
1
0
0
1
1831
10
4
0
1
3
1622
14
6
0
1
4
1886
17
3
0
1
1
740
6
3
0
0
3
1593
10
8
1
0
1
1169
6
4
0
0
4
2125
18
6
0
0
2
1554
12
6
1
0
3
1474
12
7
1
0
1
1913
6
5
0
0
1
1218
10
3
1
0
1
1006
12
4
0
0
1
2215
20
3
1
0
4
137
7
2
0
0
3
167
5
4
0
0
4
343
7
2
0
0
1
2557
20
7
1
0
4
2276
15
4
1
0
3
1494
11
2
0
1
1
2144
17
3
0
0
3
1995
10
7
0
0
2
1053
8
4
1
0
3
1526
8
4
0
1
2
1120
8
6
1
0
3
1838
7
5
1
1
3
1746
11
2
0
0
2
1616
10
4
1
1
2
1958
6
2
1
0
2
634
2
7
1
0
4
580
4
1
0
0
1
1320
4
5
1
0
1
1675
6
7
1
0
2
789
8
4
0
0
4
1735
12
7
0
1
3
1784
11
5
0
0
1
1326
16
8
0
0
3
2051
14
4
1
0
4
1044
7
5
1
0
1
1885
10
6
1
1
2
1790
11
4
0
1
3
765
4
3
0
0
4
1645
6
9
0
1
4
32
2
0
0
0
3
1266
11
7
0
0
4
890
7
1
0
1
1
2204
14
5
0
0
2
2409
16
8
0
0
2
1338
14
4
1
0
2
2076
12
5
1
0
2
1708
13
3
1
0
1
2138
18
5
0
1
4
2375
12
4
0
0
2
1455
9
5
1
1
3
1487
8
4
1
0
4
1125
6
4
1
0
2
1989
12
3
0
1
2
2156
14
5
1
0
2
Explanation / Answer
1) We calculate the mean and standard deviation of the balance data which is given-
the mean comes out to be 1495.525 and variance 361288.2 we use var.s function in excel to calculate the var and average function to calculate the mean.
2) We find 95% CI is (1475.89,1515.16)
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