QNT/ 275-For a data set obtained from a random sample
2. For a data set obtained from a random sample, n = 81 and x = 48.25. It is known
that ? = 4.8.
What is the point estimate of ?? Round to two decimal places
Make a 95% confidence interval for ?. What is the lower limit? Round to two decimal places.
Make a 95% confidence interval for ?. What is the upper limit? Round to two decimal places.
What is the margin of error of estimate for part b? Round to two decimal places.
