Assignment:
A random sample of 50 recent patient records at a clinic shows that the average billing per visit was $53.01 and the standard deviation was $16.48.
a. Find the 95% confidence interval for the mean and interpret it.
b. Find the 99% confidence interval.
c. Find the one-sided 95% confidence interval specifying at least some level of billing.
Your answer must be typed, double-spaced, Times New Roman font (size 12), one-inch margins on all sides, APA format and also include references.