In a study of media use, each person in a large representative sample of male Canadian high school students was asked how much time they spent playing video or computer games (in minutes per day). The sample mean was 123.4 minutes and the sample standard deviation was 117.1 minutes.

a. Based on the given sample mean and standard deviation, is it reasonable to think that the distribution of time spent playing video or computer games for the population of male Canadian high school students is approximately normal? Explain why or why not.

b. Suppose you wanted to use the sample data to decide if there is evidence that the average time spent playing video or computer games for male Canadian high school students is greater than 2 hours (120 minutes). What would you need to know to determine if the one-sample t test is an appropriate method?