Private Colleges 52.8 43.2 45.0 33.3 44.0 30.6 45.8 37.8 50.5 42.0 Public Colleges 20.3 22.0 28.2 15.6 24.1 28.5 22.8 25.8 18.5 25.6 14.4 21.8 a. Compute the sample mean and sample standard deviation...

Extracted text: Private Colleges 52.8 43.2 45.0 33.3 44.0 30.6 45.8 37.8 50.5 42.0 Public Colleges 20.3 22.0 28.2 15.6 24.1 28.5 22.8 25.8 18.5 25.6 14.4 21.8 a. Compute the sample mean and sample standard deviation for private and public colieges, Round your answers to two decimal places. 42.5 22.3 6.98 4.53 b. What is the point estimate of the difference between the two population means? Round your answer to one decimal place. 20.2 Interpret this value in terms of the annual cost of attending private and public colleges. %24 20200 G. Develop a 95% confidence interval of the difference between the mean annual cost of attending private and public colleges. to $ 25.7 more expensive than public colleges. 95% confidence interval, private colleges have a population mean annual cost $ 14.696