2 . The average" moviegoer" sees 8.5 movies a year . A moviegoer is defined as a person who sees at least one movie in a theater in a 12 - month period . A random sample of 40 moviegoers from a large university revealed that the average number of movies seen per person was 9 .6 . The population standard deviation is 3 . 2 movies . At the 0. 05 level of significance , can it be concluded that this represents a difference from the national average