Question 1: 12.24 Perceptions of social media. It is estimated that more than 90% ofNorth American students use social media. This has prompted much research on the mental health impacts of these technologies. In one study, researchers investigated how mental health workers perceive the association between social media and mental disorders. A sample of psychiatrists from Canada completed a questionnaire, from which a perception score was obtained (a higher score indicating a stronger perceived association). The following ANOVA table summarizes a comparison of these scores across three age groups (generations). Source DF SS MS F Age 2 137.78 68.89 0.45 Error 45 6899.54 1 53.32 Total 47 7037.32 (a) How many psychiatrists completed the questionnaire? (b) What is the estimated common standard deviation? (c) What is the rejection region at a 5% significance level? (d) State your conclusion (Reject, FTR) and write an interpretation