A social psychologist notes that the average time a person spends on social media is 2 hours a day. The researcher wants to test whether new parents spend more or less time than 2 hours on social media. She records the following number of hours spent on social media in a sample of 15 new parents: 0, 4, 1, 2, 2, 3, 0, 4, 3, 5, 2, 1, 1, 0, 2.

1. Test the hypothesis of whether new parents spend more or less than 2 hours a day on social media using a .05 level of significance. State the value of the test statistic and the decision to retain or reject the null hypothesis.

2. Compute effect size using estimated Cohen’s d.