Question 1
Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval of a population mean.
A researcher wishes to estimate the mean height of women aged between 60 and 65 in the U.S. She desires a margin of error of 0.1 inches. Past studies suggest that a population standard deviation of
is reasonable. Estimate the minimum sample size needed to estimate the population mean with the stated accuracy.
◦ 2178
◦ 66
◦ 4356
◦ 436
Question 2
Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval of a population mean.
A college teacher wishes to estimate the mean number of hours worked per week at non-college related jobs by full-time students at the college. He desires a margin of error of 1.3 hours. Past studies suggest that a population standard deviation of 13.6 hours is reasonable. Estimate the minimum sample size needed to estimate the population mean with the stated accuracy.
◦ 219
◦ 438
◦ 569
◦ 21
Muscle strength and size.
Sample Program for Changing Daily Caloric Intake
Bolts and screws have many different heads. The head determines what tool is needed.
Sample prescriptions of drugs for oral fungal infections.
How to find the possible equations of a graph?
Use the power rule to find derivative