In the Faculty of Management, a sample of 10 diploma students reported the following expenses on entertainment (RM) last year:

684 771 763 685 722 698 752 698 710 723 a) Find the mean, median and mode of the entertainment expenses.

b) Determine the standard deviation of entertainment expenses.

c) Describe the shape of distribution data through Pearson's Coefficient of Skewness

d) Construct a 99% confidence interval for the population mean.

e) Is it reasonable to conclude that the population mean is RM800?

f) Determine the minimum sample size required for the estimation to be 90% confidence with the error to be RM5. Given that population standard deviation is RM35.