SAT
3. An AP coordinator in an urban school district mandates that AP students take a practice exam, called a Mock Exam, in the spring to help identify student potential scores on the upcoming exam in May. A random sample of AP students' Mock Exams was taken and the scores recorded. The results for 28 of the students were found to be: 58, 97, 64, 57, 76, 66, 71, 75, 74, 95, 60, 74, 80, 77, 68, 52, 88, 63, 70, 71, 74, 83, 63, 81, 65, 73, 71, 82 (a) Construct a 90% confidence interval for the mean score on the AP Mock Exams given in this district
Select the correct text in the passage.Which part of this passage reflects the falling action?Ellie took pride in her archery skills.Among the 40 members of Greenville School's Archery Club, she was the only one who could hit a target 50 meters away.During the second term, a new student, Ripley, joined the archery club. On her first day, Ripley proved that she was just as good as Ellie. The instructor even believed that she could perform better than Ellie. Gradually, Ripley took over Ellie's position as the top archer of the school. As a result, Ellie lost a lot of friends who wanted to hang out with the new star archer.Finally, the day of the state archery tournament arrived. As expected, Ripley quickly climbed the scoreboards; Ellie followed closely behind. However, no one realized that Ellie had secretly been practicing for the final 50-meter round. When the final round was over, everyone was astonished. Ellie had struck a perfect bulls-eye on all five attempts. She was the state champion!Everyone rushed to congratulate Ellie on her victory. She walked over to her rival, who was standing alone in a corner. Ellie took Ripley's hand and thanked her. If it had not been for her, Ellie would have never trained so hard.Over the next several years, Ellie and Ripley continued their rivalry. But when they were not on the field, they were the best of friends.
This data set shows the ages of the last 12 winners of aprestigious film award for Actress in a Leading Role.61, 32, 33, 45, 29, 62, 22, 44, 54, 26, 28, 60Calculate the statistics of mean and standard deviationof the data set. Round to the nearest hundredth, ifnecessary.O mean 38.50 and standard deviation - 14.89O mean 38.50 and standard deviation = 40O mean = 41.33 and standard deviation = 40mean 41.33 and standard deviation - 14.89