1. Spring break can be a very expensive holiday. A sample of 90 students is surveyed, and the average amount spent by students on travel and beverages is $601.00. The sample standard deviation is approximately $394.34. Construct a 95% confidence interval for the population mean amount of money spent by spring breakers. Draw graph. (20 marks) 2. A sample of 900 students has mean 3.5 cm and standard deviation 2.61 cm is the sample from a large population of mean 3.25 cm and standard deviation 2.61 cm? Check at 99% level of confidence. Also find the range. (20 marks)