Hw01_MC - 9 C s/SQRT(n = 4.15/SQRT(25 = 0.83 10 A mean =...

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Question# Answer Comments 1 C 2 B Divide by 2.2 (1KG/2.2LBS) 3 A Over: Ha > 4 A Based on test statistic; compared to alpha 5 D Compare p-value (observed level of significance) to alphya (desired level of significance) 6 A z=(1.53-1.5)/(0.1/SQRT(100))=3; z-critical at alpha=0.05=1.645 < z of 3 7 C Because 160 is outside CI 8 A DF=18; .05 < p < 0.1 hence reject at alpha =0.1
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Unformatted text preview: 9 C s/SQRT(n) = 4.15/SQRT(25) = 0.83 10 A mean = 550; Variance = 4900; s=70; t-critical=4.303; CI=mean +/- t_critical*s/SQRT(n) 11 C DF = n-1 =99 12 C Row 100 (DF 99 is close): .01 < p < .02; hence between .01 and .05 as well 13 A 14 C 44 B t=(mean-Mu)/(s/SQRT(n))=(13.88-14)/(0.24/SQRT(16))...
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This note was uploaded on 09/25/2009 for the course IDS 371 taught by Professor Staff during the Spring '08 term at Ill. Chicago.

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