In a random sample of 68 employees in the restaurant trade, average weekly hours worked were 56 with a standard deviation of 99 hours. What is the best point estimate of the population mean, μ^? Compute a 95% confidence interval for the mean hours worked for all workers in the restaurant trade and interpret your result. Round your answers to 3 decimal places and enter the interval using square brackets, separating the two values with commas
In a random sample of 68 employees in the restaurant trade, average weekly hours worked were 56 with a standard deviation of 99 hours.
What is the best point estimate of the population mean, μ^?
Compute a 95% confidence interval for the mean hours worked for all workers in the restaurant trade and interpret your result. Round your answers to 3 decimal places and enter the interval using square brackets, separating the two values with commas
How would this confidence interval be affected if the random sample was for 16 employees? Work out the new interval, rounding again to 3 decimal places.
How large a sample would be needed to estimate the mean hours to within ±0.50 hours at the 95% confidence level?
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How would this confidence interval be affected if the random sample was for 16 employees? Work out the new interval, rounding again to 3 decimal places.
How large a sample would be needed to estimate the mean hours to within ±0.50 hours at the 95% confidence level?