The employees of Electronics Inc. would like to have a dental plan as part of their benefits package, but management is concerned about how much an average employee will spend per year on dental expenses.A sample of 45 employees reveals the mean amount spent last year was $1920, with a standard deviation of $660

(Roundall statisticsand answer tofourdecimal places)

(a) Calculate and construct, the 95% confidence interval estimate for the average amount spent per family each year on dental expenses.(3 points)

(b)INTERPRET YOUR RESULTS

(c) The information above was given to the president of Electronics Inc. He indicated he could afford $1700 of dental expenses per family.Is it possible that the population mean could be $1700?EXPLAIN!