Question

In: Statistics and Probability

I have the following data Week of Expenses Revenues Profit 6-Dec-04 103,084 122,533 19,449 13-Dec-04 99,584...

I have the following data

Week of Expenses Revenues Profit
6-Dec-04 103,084 122,533 19,449
13-Dec-04 99,584 131,036 31,452
20-Dec-04 94,936 137,813 42,877
27-Dec-04 100,757 114,495 13,738
3-Jan-05 102,736 120,579 17,843
10-Jan-05 94,866 182,122 87,256
17-Jan-05 96,158 137,983 41,825
24-Jan-05 97,013 104,668 7,655
31-Jan-05 97,796 117,807 20,011
7-Feb-05 106,315 157,735 51,420
14-Feb-05 92,307 145,685 53,378
21-Feb-05 89,923 129,758 39,835
28-Feb-05 100,546 130,642 30,096
7-Mar-05 99,270 85,895 (13,375)
14-Mar-05 98,632 125,994 27,362
21-Mar-05 100,273 113,194 12,921
28-Mar-05 100,006 127,209 27,203
4-Apr-05 105,531 114,713 9,182
11-Apr-05 92,774 145,468 52,694
18-Apr-05 103,169 151,959 48,790
25-Apr-05 105,794 68,623 (37,171)
2-May-05 98,534 126,485 27,951
9-May-05 97,474 97,000 (474)
16-May-05 102,492 121,350 18,858
23-May-05 105,295 137,074 31,779
30-May-05 99,640 152,589 52,949
6-Jun-05 101,201 153,171 51,970
13-Jun-05 99,726 136,244 36,518
20-Jun-05 96,206 101,012 4,806
27-Jun-05 100,878 156,135 55,257
4-Jul-05 99,439 125,567 26,128
11-Jul-05 95,537 154,901 59,364
18-Jul-05 105,354 128,439 23,085
25-Jul-05 89,897 116,745 26,848
1-Aug-05 91,257 168,639 77,382
8-Aug-05 104,675 148,706 44,031
15-Aug-05 93,216 141,687 48,471
22-Aug-05 102,284 141,879 39,595
29-Aug-05 103,959 106,889 2,930
5-Sep-05 97,823 169,328 71,505
12-Sep-05 97,765 126,747 28,982
19-Sep-05 108,032 154,728 46,696
26-Sep-05 101,433 162,576 61,143
3-Oct-05 96,548 138,661 42,113
10-Oct-05 93,295 158,689 65,394
17-Oct-05 100,227 135,165 34,938
24-Oct-05 97,876 112,240 14,364
31-Oct-05 102,985 118,904 15,919
7-Nov-05 100,099 141,778 41,679
14-Nov-05 102,245 161,104 58,859
21-Nov-05 102,353 140,226 37,873
28-Nov-05 105,811 133,108 27,297

He stated that profits from the last six months (26 weeks) before the fire are more indicative of future expected profits. He feels that only data from the last six months should be used to calculate future expected profits.To formally test Mr. James’s claim, test to see if there was a significant difference in mean weekly profits between the first 6 months of the year and the last 6 months.  Use a 0.05 significance level and assume equal variances.  Does this support Mr. James’s claim?

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orchestra answered 2 years ago
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