Maria is shopping for wireless routers and is overwhelmed by the number of options. In order to get a feel for the average price, she takes a random sample of 75 routers. The average price for this sample is 88 and the standard deviation is 23 . If we assume that the population standard deviation of prices is 23 (Le. if we assume Maria's sample standard deviation is a good estimate of a), what is the 90% confidence interval for the mean price of routers [1? Give your answers to 2 decimal places. Condence interval : (3; S , 3; S)