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A student team in a business statistics course wanted to determine if there was a difference in average download times for the three different types of computers (Mac, iMac, and Dell) available at the university library. The students randomly selected one computer of each type. The students went to the Microsoft game Web site and clicked on the download link for the NBA game. The time (in seconds) between clicking on the link and the completion of the download was recorded. Using ANOVA, they compared the download times with a resulting p-value of 3.43 E-12. A .01 level of significance was used. State the null and alternate hypotheses, state whether the null hypothesis should be rejected or not rejected and your reason for that conclusion, state the meaning of that conclusion specifically in terms of the problem being studied.
20 turn out to be over 65 inches tall, you get $20. Which is better: a sample of size 100 or a sample of size of 1,000? Choose one and explain. Does the law of average relate to the answer you give?
Kolzak Appliance has just received a shipment of 10 TV sets. Shortly after they were received, the manufacturer called to report that he had inadvertently shipped 3 defective sets.
The interval 6 to 12 pounds. find the probability that a person on this diet losses more than 11 pounds in the first two months.
Suppose a research firm conducted a study to determine the average amount of money steady smokers spend on cigarettes during a week.
an ecologist wishes to mark off a circular sampling region having radius 10 meters. however the radius of the resulting
the probability that a person will have 01 or2 dental checkups per year is 0.3 0.6 and 0.1 respectively. if seven
Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect? What percent of the garages take between 29 hours and 34 hours to erect?
shards of clay vessels were put together to reconstruct rim diameters of the original ceramic vessels found at the wind
There are 5,000,000 Adults 25+ in Mtown. An advertiser buys a schedule on Channel 45: 20 spots in early news with an average A25+ quarter hour audience of 150,000, 25 spots in daytime with an average A25+ quarter hour audience of 200,000, and 10 s..
Approval rating of 48% within a margin of error of 3%. Construct a confidence interval for the population proportion (p) of adults who approve of the candidate.
fifty sampling units of equal size were inspected and the number of nonconforming situations was recorded. the total
Show that if in the Law of Large Numbers we omit the assumption that all the X have the same mean and replace the m in the conclusion by [E(X1)+...+E(Xn)]/n, the law remains valid.
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