Students in a business statistics course performed a completely randomized design to test the strength of...

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Statistics

Students in a business statistics course performed a completelyrandomized design to test the strength of four brands of trashbags. One-pound weights were placed into a bag, one at a time,until the bag broke. A total of 40 bags, 10 for each brand, wereused. The data in give the weight (in pounds) required to break thetrash bags. Dataset: Trashbags
At the 0.05 level of significance, is there evidence of adifference in the mean strength of the four brands of trashbags?
If appropriate, determine which brands differ in meanstrength.
At the 0.05 level of significance, is there evidence of adifference in the variation in strength among the four brands oftrash bags?
Kroger Glad Hefty TuffStuff
34 32 33 26
30 42 34 18
40 34 32 20
38 36 40 15
36 32 40 20
30 40 34 20
30 36 36 17
42 43 34 18
36 30 32 19
38 38 34 20

Answer & Explanation Solved by verified expert

4.3 Ratings (816 Votes)

a The hypothesis being tested is H0 1 2 3 4 Ha At least one means is not equal Source DF Adj SS Adj MS FValue PValue Factor 3 19865 66216 4811 0000 Error 36 4955 1376 Total 39 24820 The pvalue is 0000 Since the See Answer

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Kroger	Glad	Hefty	TuffStuff
34	32	33	26
30	42	34	18
40	34	32	20
38	36	40	15
36	32	40	20
30	40	34	20
30	36	36	17
42	43	34	18
36	30	32	19
38	38	34	20