I need assistant on this problem. I just received help on how to another problem out but not sure if this is the same way. Please advise. Thanks!

After discussing the issue with you and others in the Finance department, the manager decided to change the payment terms for Accounts Receivable. The payment time remained at 14 days, but the penalty for late payments was increased.

After about 3 months under the new payment terms, you asked the manager to collect a second stratified random sample.

These is the data that I used

Old New Difference in Payment times

Payment Payment

Times Times

(in days) (in days)

1 Week 1 14 12 2

2 13 13 0

3 11 11 0

4 14 14 0

5 13 15 -2

6 19 14 5

7 Week 2 12 16 -4

8 18 14 4

9 13 12 1

10 16 15 1

11 15 16 -1

12 17 13 4

13 Week 3 15 14 1

14 16 12 4

15 18 16 2

16 16 13 3

17 13 18 -5

18 Week 4 27 21 6

19 25 20 5

20 23 22 1

21 26 23 3

22 23 19 4

23 27 21 6

24 Week 5 21 14 7

25 12 11 1

26 14 15 -1

27 15 13 2

28 13 14 -1

29 11 12 -1

30 Week 6 14 11 3

31 19 17 2

32 19 18 1

33 18 15 3

34 14 17 -3

35 19 17 2

36 Week 7 18 16 2

37 22 21 1

38 20 19 1

39 23 17 6

40 24 21 3

41 22 24 -2

42 Week 8 28 18 10

43 26 20 6

44 25 19 6

45 27 22 5

46 29 25 4

This is the information that I worked out in Excel

(in +H9:I26days)

Mean 16.52173913

Standard Error 0.552324146

Median 16

Mode 14

Standard Deviation 3.746044613

Sample Variance 14.03285024

Kurtosis -0.731516467

Skewness 0.427395547

Range 14

Minimum 11

Maximum 25

Sum 760

Count 46

Largest(1) 25

Smallest(1) 11

Confidence Level(95.0%) 1.112437933

t-Test: Two-Sample Assuming Equal Variances

14 12

Mean 18.73333333 16.62222222

Variance 27.83636364 13.87676768

Observations 45 45

Pooled Variance 20.85656566

Hypothesized Mean Difference 0

df 88

t Stat 2.192708762

P(T<=t) one-tail 0.015483242

t Critical one-tail 1.291245948

P(T<=t) two-tail 0.030966484

t Critical two-tail 1.662354029

Please advise on how to do this explanation and if the six step process needs to be used. Thanks!