1. Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (4.0, 4.8) when estimating the mean height (in centimeters) of a sample of seedlings.
2. In a random sample of 26 people, the mean commute time to work was 32.2 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean "u". What is the margin of error of "u"? Interpret the results.
1)
margin of error = (upper bound - lower bound)/2 = (4.8 -4)/2 = 0.4
sample = (upper bound + lower bound)/2 = (4.8 +4)/2 = 4.4
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1. Use the confidence interval to find the estimated margin of error. Then find the sample...
Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (4.1.5.3) when estimating the mean height (in centimeters) of a sample of seedlings. The estimated margin of error is The sample mean is
Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (4.1.5.3) when estimating the mean height (in centimeters) of a sample of seedlings. The estimated margin of error is The sample mean is
2. In a random sample of 26 people, the mean commute time to work was 32.2 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean "u". What is the margin of error of "u"? Interpret the results.
his Question: 1 pt 3 of 10 (0 complete) This Q Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (4.4,5.4) when estimating the mean height (in centimeters) of a sample of seedlings. The estimated margin of error is The sample mean is
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