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Answered: - I need help with the following case: A . Century National Bank


I need help with the following case:

A. Century National Bank
Refer to the Century National Bank data. Is it reasonable
that the distribution of checking account balances approximates
a normal probability distribution? Determine the
mean and the standard deviation for the sample of 60 customers.
Compare the actual distribution with the theoretical
distribution. Cite some specific examples and comment on
your findings.
Divide the account balances into three groups, of
about 20 each, with the smallest third of the balances in the
first group, the middle third in the second group, and those
with the largest balances in the third group. Next, develop a
table that shows the number in each of the categories of the
account balances by branch. Does it appear that account
balances are related to the branch? Cite some examples
and comment on your findings.


Balance

 

1756

 

748

 

1501

 

1831

 

1622

 

1886

 

740

 

1593

 

1169

 

2125

 

1554

 

1474

 

1913

 

1218

 

1006

 

2215

 

137

 

167

 

343

 

2557

 

2276

 

1494

 

2144

 

1995

 

1053

 

1526

 

1120

 

1838

 

1746

 

1616

 

1958

 

634

 

580

 

1320

 

1675

 

789

 

1735

 

1784

 

1326

 

2051

 

1044

 

1885

 

1790

 

765

 

1645

 

32

 

1266

 

890

 

2204

 

2409

 

1338

 

2076

 

1708

 

2138

 

2375

 

1455

 

1487

 

1125

 

1989

 

2156

 


 

ATM

 


 

Services

 

13

 

9

 

10

 

10

 

14

 

17

 

6

 

10

 

6

 

18

 

12

 

12

 

6

 

10

 

12

 

20

 

7

 

5

 

7

 

20

 

15

 

11

 

17

 

10

 

8

 

8

 

8

 

7

 

11

 

10

 

6

 

2

 

4

 

4

 

6

 

8

 

12

 

11

 

16

 

14

 

7

 

10

 

11

 

4

 

6

 

2

 

11

 

7

 

14

 

16

 

14

 

12

 

13

 

18

 

12

 

9

 

8

 

6

 

12

 

14

 


 

Debit

 

4

 

2

 

1

 

4

 

6

 

3

 

3

 

8

 

4

 

6

 

6

 

7

 

5

 

3

 

4

 

3

 

2

 

4

 

2

 

7

 

4

 

2

 

3

 

7

 

4

 

4

 

6

 

5

 

2

 

4

 

2

 

7

 

1

 

5

 

7

 

4

 

7

 

5

 

8

 

4

 

5

 

6

 

4

 

3

 

9

 

0

 

7

 

1

 

5

 

8

 

4

 

5

 

3

 

5

 

4

 

5

 

4

 

4

 

3

 

5

 


 

Interest

 

0

 

1

 

0

 

0

 

0

 

0

 

0

 

1

 

0

 

0

 

1

 

1

 

0

 

1

 

0

 

1

 

0

 

0

 

0

 

1

 

1

 

0

 

0

 

0

 

1

 

0

 

1

 

1

 

0

 

1

 

1

 

1

 

0

 

1

 

1

 

0

 

0

 

0

 

0

 

1

 

1

 

1

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

1

 

1

 

1

 

0

 

0

 

1

 

1

 

1

 

0

 

1

 


 

City

 

1

 

0

 

0

 

1

 

1

 

1

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

0

 

1

 

0

 

0

 

0

 

1

 

0

 

1

 

0

 

1

 

0

 

0

 

0

 

0

 

0

 

0

 

1

 

0

 

0

 

0

 

0

 

1

 

1

 

0

 

1

 

0

 

0

 

1

 

0

 

0

 

0

 

0

 

0

 

1

 

0

 

1

 

0

 

0

 

1

 

0

 


 

2

 

1

 

1

 

3

 

4

 

1

 

3

 

1

 

4

 

2

 

3

 

1

 

1

 

1

 

1

 

4

 

3

 

4

 

1

 

4

 

3

 

1

 

3

 

2

 

3

 

2

 

3

 

3

 

2

 

2

 

2

 

4

 

1

 

1

 

2

 

4

 

3

 

1

 

3

 

4

 

1

 

2

 

3

 

4

 

4

 

3

 

4

 

1

 

2

 

2

 

2

 

2

 

1

 

4

 

2

 

3

 

4

 

2

 

2

 

2

 


 

 


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