Question 9 10 pts From a sample of 48 days in a recent year, U.S gasoline prices had a mean of $3.63. Construct a 90% confidence interval for the population mean. Assume that the population is uniform distributed with a standard deviation of $0.21. Write all your work in the provide rectangle. Write your answer in a complete sentence. Edit View Insert Format Tools Table 12pt ~ Paragraph ~ BIU A & TIM