5. For a study of adolescents' disclosure of their dating and romantic relationships, a sample of 231 high school students was surveyed. One of the variables of interest was the level of disclosure to an adolescent's mother (measured on a 5-point scale, where 1 = "never tall" and 5 = "always tell"). The sampled high school students had a mean disclosure score of 3.21 and a standard deviation of 1.13. The researchers hypothesize that the true mean disclosure score of all adolescents will exceed 3, Do you believe the researchers? Conduct a formal test of hypothesis using a= 0.10. Set up He and H, for testing whether the true maan disclosure score of all adolescents exceeds 3. Choose the correct answer below. OA HJ: H=3 Hip#3 O C. HI: H=3 OD. H,: P#3 If a = 0.10, find the rejection region for the test. Choose the correct answer below. OA 2>1.645 OB. 2 1.645 orz1.28 or2