Q7 Concern about Screen Time 2 Points A 95% condence interval is calculated for the percentage of parents who believe the widespread use of smartphones by young children might potentially result in more harm than benets. The resulting confidence interval is 68.8% to 73.2%. Which of the following is not true? 0 If we repeatedly take samples of the same size and construct a 95% condence interval for each of them, we expect that 95% of those intervals will contain the true percentage of parents who believe the widespread use of smartphones by young children might potentially result in more harm than benefits. 0 We estimate, with 95% condence, that the interval 68.8% to 73.2% contains the true percentage of parents who believe the widespread use of smartphones by young children might potentially result in more harm than benefits. 0 We estimate, with 95% condence, that the interval 68.8% to 73.2% contains the sample percentage of parents who believe the widespread use of smartphones by young children might potentially result in more harm than benefits. 0 The point estimate was 71%. 08 Comparing Exam Scores 2 Points Aric is taking both chemistry and sociology. Recently he had midterms in both classes. He scored 78 on his chemistry exam and 85 on his sociology exam. For the chemistry exam, the mean was 65 and the standard deviation was 8. For the sociology exam, the mean was 75 and the standard deviation was 7. The distributions of scores for both exams are known to have the same shape. Relative to the general performance of each exam, which exam did Aric do better on? O The chemistry exam, since his standard score for chemistry is larger than his standard score for sociology. O The chemistry exam, since his standard score for chemistry is smaller than his standard score for sociology. O The sociology exam, since his standard score for sociology is larger than his standard score for chemistry. 0 The sociology exam, since his standard score for sociology is smaller than his standard score for chemistry. 0 This cannot be determined without obtaining more information