QUESTION 2 The following table shows the frequency distribution of the number of days that it took to deliver a shipment from the day it was ordered.

Days	Number of shipments
1 - 3	10
4 - 6	8
7 - 9	6
10 - 12	3
13 - 15	4
16 - 18	1

a) Compute mean and standard deviation. (5 marks) b) Construct a less than ogive using information above. (5 marks) c) From the ogive in (b), find median. (2 marks) d) Calculate the Pearson coefficient of skewness and interpret your answer. (3 marks)