The number of cars sold annually by used car salespeople is normally distributed with a standard...
The number of cars sold annually by used car salespeople is normally distributed with a standard deviation of 14. A random sample of 430 salespeople was taken and the mean number of cars sold annually was found to be 78. Find the 97% confidence interval estimate of the population mean.
Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits.
Confidence Interval =
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The number of cars sold annually by used car salespeople is
normally distributed with a standard...
(1 point) It is known that the amount of time needed to change the oil in...
(1 point) It is known that the amount of time needed to change the oil in a car is normally distributed with a standard deviation of 3 minutes. A random sample of 115 oil changes yielded a sample mean of 27 minutes. Compute the 92% confidence interval estimate for the population mean. Note: For each confldence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the contfidence limits. Confdence Interval-
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Thanks Will upvote! (1 point) How many rounds of golf do those physicians who play golf...
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Will upvote!
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(1 point) How many rounds of golf do those physicians who play golf play per year?...
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(1 point) It is known that the amount of time needed to change the oil in a car is normally distributed with a standard deviation of 3 minutes. A random sample of 115 oil changes yielded a sample mean of 27 minutes. Compute the 92% confidence interval estimate for the population mean. Note: For each confldence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the contfidence limits. Confdence Interval-
A statistics practitioner took a random sample of 54 observations from a population whose standard deviation is 33 and computed the sample mean to be 105. Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits. A. Estimate the population mean with 95% confidence. Confidence Interval = B. Estimate the population mean with 90% confidence. Confidence interval = C. Estimate the population mean with 99%...
Thanks
Will upvote!
(1 point) How many rounds of golf do those physicians who play golf play per year? A survey of 12 physicians revealed the following numbers: 7, 41, 16, 3, 32, 41, 19, 15, 18, 33, 14, 50 Estimate with 97% confidence the mean number of rounds played per year physicians, assuming that the population is normally distributed with a standard deviation of 6. Note: For each confidence interval, enter your answer in the form (LCL, UCL). You...
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