Mark wants to estimate the mean length of time (in minutes) all Middle School students spend reading online books. To determine this estimate, he took a random sample of 15 people and obtained the following results: 40, 110, 56, 20, 15, 10, 82, 60, 90, 118, 35, 25, 5, 65, 30. The population of times is normally distributed. What is the margin of error at the 95% confidence level if the population standard deviation is 8 minutes? Round off you answer to the nearest whole number.
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Mark wants to estimate the mean length of time (in minutes) all Middle School students spend reading online books. To determine this estimate, he took a random sample of 15 people and obtained the following results: 40, 110, 56, 20, 15, 10, 82, 60, 90, 11
Matthew wants to estimate the mean length of time (in minutes) all Senior High students spend reading online news articles. To determine this estimate, he took a random sample of 15 people and obtained the following results: 40, 110, 56, 20, 15, 10, 82, 60, 90, 118, 35, 25, 5, 65, 30. The population of times is normally distributed. Construct the 95% confidence interval for the population mean length of reading time. Type the endpoints of the interval separated by...
Jacob wants to estimate the mean length of time (in minutes) all College students spend reading online journal articles. To determine this estimate, he took a random sample of 15 people and obtained the following results: 40, 110, 56, 20, 15, 10, 82, 60, 90, 118, 35, 25, 5, 65, 30. The population of times is normally distributed. Find a point estimate for the population mean. Round off your answer to the nearest whole number.
a published wants to estimate the mean length of time all adults spend reading news papers. to determine the estimate the publisher take a random number sample of 15 people and obtained the results below. from past studies, the publisher assumes õ is 1.7 minutes and that the population of times normally distributed. 6, 10,10,11,11,10,6,8,7,7,8,7,8,12,9. construct the 90% and 99% confidence intervals for the population mean,
- publisher wants to estimate the mean length of time in minutes) all adults spend reading newspapers. To determine this estimate the publisher takes a random sample of 15 people and obtain the results below. From past studies, the bisher assumes als 1.9 minutes and that the population of times is normally distributed 10 12 10 7 10 11 6 7 6 Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider convenient, use technology...
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A publisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. To determine this estimate the publisher takes a random sample of 15 people and obtains the results below. From past studies, the publisher assumes o is 23 minutes and that the population of times is normally distributed 12 9 10 7 9 8 7 12 12 6 11 9 9 Construct the 90% and 99% confidence intervals for the population mean. Which...