A student went for a job interview and obtained the scores shown in the table at the left. Experience counts 3 times as much as academic achievement or interpersonal skills. Academic achievement and interpersonal skills are equally weighted and count 2 times as much as the interview. It the interview is considered to have a weight of 1. what was the student's weighted mean score? . . Score Cntcrlon out of 10 Experience 3 Academic 6 Achievement Interpersonal 8 Skills Interview T A student wrote three quizzes and obtained the marks 3, 9, 9. The mean mark = 8. (H)? Complete the table below and calculate the standard deviation using the formula 3 : nl The histogram shows the amount of time required by a class of 18 students to complete an assignment. Calculate the median time. Time required to complete assignment 8 a 5 5 j 4 0' E 2 o 0.00 20.00 40.00 50.00 30.00 1000012000 Time (minutes) The histogram below shows the distribution of marks in a small class of 12 students. a) Draw the corresponding box-and-whisker plot beneath the histogram. b) In what percentile is a mark of 85%? Mark Distribution in a Class of 12 Students 3 2 Frequency 1 Marks 0 0.00 10.00 20.00 30.00 40.00 50.00 60.00 70.00 80.00 90.00 100.00 110.00 120.00 0 410 20 30 40 50 60 70 80 90 100Calculate the mean for the mark distribution by completing the table and using the formula I = Distribution of Marks on a Test 12 fi xfi In Frequency 50 DO TOTOD 30.00 100 00 Mark