Lab 03Template

# Lab 03Template - z = 0.6914 falls Since the test statistic...

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Bradley Kendzora INSTRUCTIONS: DS 123 Lab #3 1. Under File, select Page Setup. Select the top tab: Sheet. Due: 2/25/08 In the Print window, select Gridlines and Row and Column Headers. 2. Set column A to width 10 and column C to 16. Question 1. Problem 8.33, p. 321 Hypotheses: H0: mu <= 31 H0: ?? HA: mu > 31 HA: ?? Rejection Region: 2.33 Rej H0 if p-value < 0.01 Test Statistic: 0.69 p-value = 0.25 Conclusion: with at least 99% confidence. H0 with at least 99% confidence. Implication: conclude that the automaker should be conclude that the automaker should awarded the tax break. be awarded the tax break. Question 2. Problem 8.73, p. 336 Hypotheses: H0: mu < .18 H0: ?? HA: mu >= .18 HA: ?? Rejection Region: 1.96 Rej H0 if p-value < 0.05 Test Statistic: 1.68 p-value = 0.05 Conclusion: Implication: conclude that the mouthwash to conclude that the mouthwash commercial is successful. commercial is successful. z -Statistic p -value α = 0.01 = 0.01 z -coeff = Rej H0 if z > 2.326 z = Since the test statistic of
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Unformatted text preview: z = 0.6914 falls Since the test statistic of p-value = 0.2463 below the critical value falls above the critical of z = 2.326 , we do not reject H0 of α = .01 , we do not reject There is not enough evidence to There is not enough evidence to t-Statistic p-value = 0.05 = 0.05 z-coeff = Rej H0 if z > 1.960 z = Since the test statistic of z = 1.6803 falls Since the test statistic of p-value = .0472 below the critical value falls below the critical of z = 1.960 , we do not reject H0 of α = .05 , we reject with at least 95 % confidence. H0 with at least 95 % confidence. There is not enough evidence to There is enough evidence 31 : 31 : ≤ μ A H H 18 . : 18 . : ≥ < A H H A B C D E F G H 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49...
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