HW 8 Practice for the Final Exam: Problem 19 Previous Problem Problem List Next Problem (1 point) On a particular golf course, a sample of 39 golfers have a mean golf score of 72. Suppose the population standard deviation for this course is 5.97. (a) Using the formula a 90% confidence interval as presented in lecture, fill in the blanks with the appropriate values for this problem for calculating the confidence interval below. To enter vx where x is any number, type sqrt(x). For example, v2 should be typed as sqrt(2). 0-0 to + (b) Find a 90% confidence interval for the mean golf score of all golfers. Round each answer to the nearest hundredth (2 decimal places). to [ (c) Calculate the margin of error for the answer above. Round the answer to the nearest hundredth (2 decimal places).HW 8 Practice for the Final Exam: Problem 20 Previous Problem Problem List Next Problem (1 point) Justin is interested in buying a digital phone. He visited 9 stores at random and recorded the price of the particular phone he wants. The sample of prices had a mean of $296.57 and a standard deviation of $32.77. Calculate a 95% confidence interval for the mean price of this model of digital phone: (Enter the smaller value in the left answer box.) Note: Round your answer to 2 decimal places. $ to $ Note: You can earn partial credit on this