Dr. Vegapunk thinks that watching anime (Japanese animatedshows) decreases social skills in college students. To test this,Dr. Vegapunk randomly selected 30 brooklyn college students andassigned them to watch an episode of anime everyday for a week.After the week, each of the students answered a questionnaire abouttheir social skills. The results showed that the sample had a meansocial skills score of 7.3 and a standard deviation of 2.4. Aprevious study showed that the overall population of brooklyncollege students had a mean social skills score of 6.2, but thestandard deviation was not reported. Dr. Vegapunk decides to use analpha level of 0.05.
a) what test should he use?
b) what is the alternative hypothesis?
c) what is the null hypothesis?
d) what is the critical value?
e) what is the obtained statistic?
