PLEASE SOMEONE HELP ME?(PASULAT PO SA PAPER YUNG ASNWER PARA MADALI MASUNDAN, THANK YOU).

3. A soda machine is regulated so that the amount of drink dispensed is approximately normally distributed with a standard deviation equal to 1.5 deciliters. A random sample of 36 drinks had an average content of 22.5 deciliters. What can we assert with a 95% confidence about the possible size of our error if we estimate the mean amount of drink dispensed to be 22.5 deciliters? 4. Mr. Zamora, an admission officer in a university would like to estimate how long will it take to complete the test he has prepared for the entrance exams. He assumes that the time taken to complete a problem in Statistics test is normally distributed. A sample of 75 was taken, and sample mean and standard deviation were found to be 2.5 and 0.55 hours respectively. Estimate the mean time taken to complete the test using a 90% confidence interval