1. Are these rides equal in terms of monetary revenue? Test at .1 significance l

Question

1. Are these rides equal in terms of monetary revenue? Test at .1 significance level. Tornado: Average daily revenue = $700.00; standard deviation = 180.0; n = 12 Double Blizzard: Average daily revenue = $690.00; standard deviation = 125.0; n = 15 2. Are the companies equal from point of view of fat amount? Test at .05 significance level Company A: Average amount of fat = 10.6 milligrams; standard deviation = 2.6 milligrams; n = 15 Company B: Average amount of fat = 10.2 milligrams; standard deviation = 2.4 milligrams; n = 10 3. Take-Home Pay. Is there a difference between the earnings of married people compared to the ones for unmarried? Married Not Married $540.60 $588.20 s $60 $80 n 45 55 Test at a = .1 4. Who misses work more often at the ABC Company: Smokers or non-smokers? Are they different? Test at .02 significance level. Smokers: Average number of days absent = 12; standard deviation = 3.0; n = 60 Non-Smokers: Average number of days absent = 10; standard deviation = 4.0; n = 40;

Explanation / Answer

Z=(700-690)/sqrt(180^2/12+125^2/15)=0.16

Z for 99% confidence is:2.3

since calculated value is less than table value we fail to reject null hypothesis

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