With clear solutions, please

2-a) Find the mean, quartile values, the interquartile range, and the sample standard deviation of the salaries listed below. Salary ($) Frequency 28 000 UN 30 000 31 000 32 000 6 33 000 2 35 000 2 39 000 b) Draw a box and whisker plot for this data. c) Does this data include an outlier? Explain. 3- The final mark in a data management class is calculated using the weightings shown in the table below. What was Sarah's final mark? Weighting Sarah's Mark Quizzes 10% 78 out of 84 Assignments 10% 102 out of 120 Tests 30% 203 out of 250 Culminating Assignment 20% 85 out of 100 Exam 30% 76 out of 904- The following table lists a recent applicant's scores (1 to 5) on a job interview and the company's weighting factors (1 to 3). a) Determine the weighted mean score for this job applicant. b) What do the weighting factors indicate about the company's hiring priorities? 5- A set of 8 numbers has a median of 19. If the numbers are arranged from largest to smallest, what is the sum of the fourth and the fth number