6. The sum of squares for error is
(A)1021.8
(B)14512.0
(C)20853.5
(D)147144.0

7. In the ANOVA table, the test for the main cffect of DESIGN has a P.-value of .613. This indicates that (A)sales probably vary considerably for the different designs. (B) for about 61.3% of the samples, there was a difference in the effect of design. (C)for about 61.3% of the samples, there was no difference in the effect of design. (D)None of the above is true.

8. the numerical value of the F statistic for testing interaction is(A)0.59(B)1.70(C)3.40(D)202.33

9. Investing is a game for chance. Suppose there is a 40% chance that a risky stock investment will end up in a total loss of your investment. Because the rewards are so high, you decide to invest in four independent risky stocks. Find the probability that at least one of your investments becomes a total loss. (A).0256 (B).40 (C).9744 (D).8704

10. The on-line access computer service industry is growing at an extraordinary rate. Current estimates suggest that only 20% of the home-based computers have access to on-line services. This number is expected to grow quickly over the next five years. Suppose 25 people with home-based computers were randomly and independently sampled.Find the probability that fewer than half of those sampled currently have access to on-line service. (A) 1,000 (B) .998 (C)994 (D).999

11. A small company conducted a survey of its employees to determine their attitudes towards a buyout of the company's stock. The company's 1,040 employees were asked whether they favored a buyout and when they were planning to retire. The data is shown in the accompanying table:  Which of the following is true between events A and B? (A)A and B are independent of onc another. (B) A and B are mutually exclusive events. (C)A and B are complimentary events. (D)A and B are dependent events.

12. A beer dispensing machine flls thousands of 12 ounce beers each day. The machine is very consistent but the pours do vary a little bit. Assume it is known that the distributions of pours is normally distributed with a mean of 12.1 ounces and a standard deviation of .05 ounces. Customers get very angry when their beers have less than the advcrtised 12 ounces of beer in them. Find the proportion of the customers that could get angry because of this reason. (A).4772 (B).9772 (C).0.228 (D).5228 1.040

13. Recent market research reveals that an estimated 30% of U.S. households own one or more personal computers (PCs). Supposc that in a sample of 500 houscholds in a large high-tech community, 178 own PCs. What distribution is appropriate to use to estimate the binomial random variable x = the number of the 500 homes that own PC's? (A)normal (B) exponential (C)Poisson (D)uniform

14. we never conclude "Accept HO" in a test of hypothesis. This is because: (A) α is the probability of a Type I error. (B) The rejection region is not known. (C)The p-value is not small enough. (D)β= p (type II error) is not known.

15. The manufacturet of an over-the-counter pain reliever claims that its product brings pain relief to headache sufferers in less than 3.5 minutes, on average. To be ablc to make this claim in its television advertisements, the manufacturer was required to present statistical evidence in support of their claim. The manufacturer reported that for a random sample of 50 headache sufferers, the mean time to relief was 3.3 minutes and the standard deviation was 60 seconds. Find the rejection region for the test if testing at a= .05. (A)Reject H0 ifz＜-1.96. (B) Reject  H0 ifz＜-1.645. (C)Reject  H0 ifz＜-1.282. (D)Reject H0 ifz ＜ -1.96 or z ＞1.96.

16. Researchers have claimed that the average number of headaches during a semester of Statistics is 14. Statistics professors dispute that this claim vehemently. Statistic professors believe the av average is much more than this. They sample n = 13 students and find the sample mean is 16 and the sample standard deviation is 2.0. The test statistic for this test is: (A)t =3.6 (B) t=1.0 (C)1=1.8 (D)t =2.1

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