1) Tests were performed on samples of recently manufactured aluminum cans, one sample of 133 cans that are 0.0108 in thi

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1 Tests Were Performed On Samples Of Recently Manufactured Aluminum Cans One Sample Of 133 Cans That Are 0 0108 In Thi 1 (29.4 KiB) Viewed 30 times

1) Tests were performed on samples of recently manufactured aluminum cans, one sample of 133 cans that are 0.0108 in thick and another sample of 117 cans that are 0.0112 in thick. An axial load is the maximum weight the sides can support vertically, and the sample of 0.0108 cans had mean 254.8 lbs with standard deviation 17.9 lbs. The 0.0112 cans had mean load 275.4 lbs with standard deviation 19.3 lbs. Use a 0.20 level of significance to test the claim that the two groups of cans have the same population standard deviation. For purposes of calculation, which group should be group 17 a) The 0.0108 in cans, because of the smaller standard deviation. b) The 0.0112 incans, because of the larger standard deviation. c) Either one is fine. d) Neither is a good choice. 2) See problem 1. State the null and alternative hypotheses. Ho:₂₂ Hodo a) Ha: 0₂-0₂ b) He 6, > 0: 3) See problem 1. State the critical F value. a) 1.3519 b) 1.5343 Hod=d₂ c) Hai ₁0₂ a) 1.3849 c) 1.4327 Ho: 20₂ d) Ho₂ <₂ d) 1.6668 4) See problem 1. Use the formula or STAT>TESTS-25ampFTest to compute the test statistic F. b) 1.1625 c) 4.0093 d) 2.8397