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QUESTION #4
(20 marks)
A social and personality psychologist thinks that creativity differs by personality traits rather than the traditional view that it is a cognitive process. Specifically, this psychologist thinks that introverts are more creative than extraverts. The researcher gives a personality test to a group of 16 university students and then separates them based on the assessment results into 2 groups: 8 students in the extravert and 8 students in the introvert group. The participants are then asked to write a short story which is rated on creativity by a well-known author. The creativity scores range from 0 to 20 on an interval scale where higher scores indicate greater creativity. The results are shown in Table 1. Using an alpha level of .05, are introverts more creative than extroverts? Use all the steps of hypothesis testing.
Table 1. Creativity scores for introverts versus extroverts