Question 270 out of 483871 points exhibit 8 2 the

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Question 270 out of 4.83871 pointsExhibit 8-2The manager of a grocery store has taken a random sample of 64 customers. The average length of time it took these 64 customers to check out was 4.0 minutes. It is known that the standard deviation of the checkout time is one minute.Refer to Exhibit 8-2. The 95% confidence interval for the average checkout time of all customers isSelected Answer:[None Given]Answers:a. 3.141 to 5.010b. 3.369 to 4.641c. 2.804 to 3.196d. 3.755 to 4.245
Question 280 out of 4.83871 pointsExhibit 8-2The manager of a grocery store has taken a random sample of 64 customers. The average length of time it took these 64 customers to check out was 4.0 minutes. It is
known that the standard deviation of the checkout time is one minute.Refer to Exhibit 8-2. With a .95 probability, the sample mean will provide a margin of error ofSelected Answer:[None Given]
Question 290 out of 2.5 pointsThe proportion of Americans who support the death penalty is 0.53. A sample of 1000 randomly selected Americans is surveyed by telephone interview.The probability that the sample proportion of those supporting the death penalty will be at least 0.55 is [x1]USE 4 DECIMALS. FOR EXAMPLE, 0.1234Specified Answer for: x1[None Given]Correct Answers for: x1Evaluation MethodCorrect AnswerExact Match0.1025Exact Match0.103Exact Match.1025Question 300 out of 2.5 pointsThe proportion of Americans who support the death penalty is 0.53. A sample of 1000 randomly selected Americans is surveyed by telephone interview. The probability that the sample proportion of those supporting the death penalty will be less than 0.50 is [x1]USE 4 DECIMALS. FOR EXAMPLE, 0.1234Specified Answer for: x1[None Given]Correct Answers for: x1Evaluation MethodCorrect Answer
Exact Match0.0287Exact Match.0287Question 310 out of 4.83871 pointsExhibit 8-1In order to estimate the average time spent on the computer terminals per student at a local university, data were collected from a sample of 64 business students over a one-week period. Assume the population standard deviation is 1.2 hours.Refer to Exhibit 8-1. With a 0.98 probability, the margin of error is approximatelySelected Answer:[None Given]
Question 320 out of 4.83871 pointsExhibit 8-1In order to estimate the average time spent on the computer terminals per student at a local university, data were collected from a sample of 64 business students over a one-week period. Assume the population standard deviation is 1.2 hours.Refer to Exhibit 8-1. If the sample mean is 10 hours, then the 98% confidence interval isapproximatelySelected Answer:[None Given]
Question 33
0 out of 4.83871 pointsExhibit 8-1In order to estimate the average time spent on the computer terminals per student at a local university, data were collected from a sample of 64 business students over a one-week period. Assume the population standard deviation is 1.2 hours.Refer to Exhibit 8-1. The standard error of the mean isSelected Answer:[None Given]Answers:a. 7.5b. 0.15c. 0.160d. 0.133

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