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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

  1. At the 0.05 level of significance, is there evidence of adifference in the mean strength of the four brands of trashbags?
  2. If appropriate, determine which brands differ in meanstrength.
  3. At the 0.05 level of significance, is there evidence of adifference in the variation in strength among the four brands oftrash bags?
    KrogerGladHeftyTuffStuff
    34323326
    30423418
    40343220
    38364015
    36324020
    30403420
    30363617
    42433418
    36303219
    38383420

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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