## 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
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

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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Oct 07, 2020

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