Question 7 (4 points) ) Listen The marketing team at Blahblahs Groceries have been running an add campaign for the last quarter of sales of the summer drink Cool Juice. The team wants to know the average revenue from the sale of the product after the campaign. They take a sample of 54 store sales of the Cool Juice for the quarter. The sample reveals the mean amount spent per day on Cool Juice in the stores was $1820, with a standard deviation of $660 (Round all statistics and answer to four decimal places) (a) Calculate and construct, the 95% confidence interval estimate for the average amount spent each day on Cool Juice. (3 points) (b) INTERPRET YOUR RESULTS (c) The information above was given to the president of Blahblahs Groceries. He indicated that he would continue to fund the marketing campaign if the sales were $1900 per day. Is it possible that the population mean could be $1900? EXPLAIN! (1 point)