10) Researchers conducted an emperment to beat the effects of alcohd. The ertors were fecurucu it a test of witual and m

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10 Researchers Conducted An Emperment To Beat The Effects Of Alcohd The Ertors Were Fecurucu It A Test Of Witual And M 1 (28.51 KiB) Viewed 43 times

10) Researchers conducted an emperment to beat the effects of alcohd. The ertors were fecurucu it a test of witual and motor skils for a treatment group of 31 people who drark dicohoi and another group of 31 peosle who drank a placebo liquid. The errors fer the treatment group had saandard deviation 2,37, while the errors for the placebo growp had standard deviation 0.55, Use a 0.05 significance levei to test the caim that the treatment group had ap. Which eroup should be group 1 ? a) Neither cene b) Enther one c) Placebo group d) Treatment graup 11) See problem 10. 5 cate the null and alteenathe loppotheses. a) Hod1​≤σ1​ d) Hdσ1​≥σ2​ a) Haa1​≥e2​ b) Her e1​=σ2​ c) Hes θ1​=σ2​ d) Ha=σ1​<σ2​ 121 See problem 10. Use Tabie A.5 to find the critical value. a) 20923 b) 2.0739 c) 1.692 B d) 1.8409 13) See problem 10. Calculate the test statistic: a) 1.1397 b) 7.7742 c) 2,4895 d) 7.7743 14) See problem 10. Calculate the pualue. a) 1.1396 b) 1.1397 c) 7.7718 d) 1.1397×10−7