The following table gives the goods shipped to different regions. Please find out the relationship between month and the region (independent or dependent) by using Chi square distribution.
You have to provide expected values, degree of freedom, 95% confidence level and the critical value in Chi square distribution table to confirm your statement.
|
Month
|
Region 1
|
Region 2
|
Region 3
|
Region 4
|
|
January
|
300
|
400
|
500
|
600
|
|
February
|
340
|
440
|
540
|
640
|
|
March
|
380
|
480
|
580
|
680
|
|
April
|
400
|
500
|
600
|
700
|
|
May
|
420
|
520
|
620
|
720
|
|
June
|
450
|
550
|
650
|
750
|
|
July
|
410
|
510
|
610
|
710
|
|
August
|
390
|
490
|
590
|
690
|
|
September
|
365
|
465
|
565
|
665
|
|
October
|
350
|
450
|
550
|
650
|
|
November
|
320
|
420
|
520
|
620
|
|
December
|
330
|
430
|
530
|
630
|