PLEASE HELP !! SOS - FINAL EXAM

1. Give the Five-Number Summary and test for Outliers: 1, 5, 8, 10, 11, 12, 13, 18, 19, 20, 28, 38, 50 2. In a recent study of 53 ninth-grade students, the mean number of hours per week that they played video games was 72. The standard deviation of the population was 4.3. Find the 84% confidence interval for the mean of the time playing video games. 3. How large a sample is needed to estimate, with 91% confidence, the average number of minutes per day a person spends on the internet within 5 minutes? The population standard deviation is 37 minutes. 4. The average prison sentence for a person convicted of petty theft is 15 years. If the sentences are normally distributed with a standard deviation of 2.1 years, find these probabilities: a. A prison sentence is greater than 18 years. b. A random sample of 20 prison sentences is less than 14.6 years