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The fine for running a red light increases to $300. If the probability of getting caught is .02, the probability of getting a ticket is .97 and the probabiity of having to pay the ticket is .94, what is the direct cost of running a red light.
Minutes of activity for lean people gad N(526, 107). Withink what limits do active minutes for about 95% of people in each group fall? Use the 68-95-99.7 rule.
For a sample of 36 students in a class the mean score in Mathematics is 72 with a standard deviation of 7. Find the 95% confidence interval for the mean score.
If the manufacturer's claim is true, what is the probability that the claim will be rejected?
The Precision Scientific Instrument Company manufactures thermometers which are supposed to give readings of 0o C at the freezing point of water.
Make a List of type of possible errors. Assume that you were interested in knowing the mean score for a certain quiz in a statistics class.
If 55 people are chosen at random, what is the probability that the sample mean of IQ scores will not differ from the population mean by more than 2 points?
A large population of overdue bills has balances that follow a normal curve. When we take a sample of 100 of these the average is $500 and the standard deviation is $100. (a) what statement can you make about the range $300 to $700? (b) what state..
For a normal probability distribution, about 95 percent of the area under normal curve is within plus and minus two standard deviations of the mean and practically all (99.73 percent) of the area.
A certain map is drawn so that a distance of 0.5 inch on the map represents 12.5 miles of actual distance. If the distance between two towns is 4.5 inches on the map, what is the actual distance, in miles, between the two towns?
The plant manager wants to evaluate the capability of a critical cutting operation that he suspects might be the source of the gap problem. The nominal specification for this cutting operation is 25.500 inches.
A physician's health study of the effectiveness of aspirin in the reduction of heart attacks was begun in 1982 and completed in 1987. Of 11,037 male medical doctors in the United States who took one 325 mg buffered aspirin tablet every other day
Consider the following age data, which is the result of selecting a random sample of 20 United Airlines pilots.
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