I would like some assistance with the following probability questions

The figure shows the total bill (in thousands of dollars) for customers visiting an electronics store by the day of the week of their visit (note the store is only open from Thursday to Sunday). Which day of the week has the largest range? 50 40 30 Total Bill 20 10\fIn Critical Reading 40% of the final grade is determined by a mid semester assignment, 25% is determined by attendance and the remainder by a final assignment. If Brandon got 91 on his mid semester assignment, 80 for attendance and 85 for the final assignment, what is his final grade? Select one: O a. 85.33 O b. 86.15 O c. 86.75 O d. 83.75The annual salary of 9 entry level statisticians ($US '000) is as follows: 10, 13, 13, 15, 19, 20, 20, 20, 25. If one of the 20s should have been 21, the measure(s) that will change is/are Select one: O a. the mean and the median. O b. the mean only. O c. the median and the mode. O d. the median only. O e. the mode only. f. the mean and the mode. O g. the mean, median and mode.Which measure would you use to describe the graph labelled III? Y-Axis X-Axis III 8 8 8 9 7 0114668 8 2688 9 06 10 4 11 0 IV V Select one: O a. Standard deviation O b. Range nce