Answer Happy

The National Football League (NFL) polls fans to develop a rating for each football game (NF website, October 24, 2012). Each game is rated on a scale from 0 (forgettable) to 100 (memorable). The fan ratings for a random sample of 12 games follow. Excel File: data07-11.xlsx 57 57 79 - Develop a point estimate of mean fan rating for the population of NFL games 61 74 20 86 80 72 83 73 74 b. Develop a pont estimate of the standard deviation for the population of Nr.games (to decimal)

The mean preparation fee H&R Block charged retail customers in 2012 was $183 (The Wall Street Journal, March 7, 2012). Use this price as the population mean and assume the population standard deviation of preparation fees is $50, Use 7-table. Round your answers to four decimal places a. What is the probability that the mean price for a sample of 30 H&R Block retall customers is within 88 of the population mean? b. What is the probability that the mean price for a sample of 50 HAR Block retail customers is within $8 of the population mean? c. What is the probability that the mean price for a sample of 100 H&R Block retail customers is within $5 of the population mean? d. Which If any of the sample sizes in parts (a), (b), and (c) would you recommend to have at least a 95 probability that the sample mean is within 38 of the population mean? - Select your answer