Question 1 a. Using your own words, differentiate descriptive statistics from inferential statistics. b. The sales per day, in dollars, at a retail store are given below. 1520 2620 3360 1350 2545 1430 2400 1550 2390 1560 i. Calculate the mean, median, first quartile and third quartile. ii. Calculate the variance and standard deviation, interquartile range and coefficient of variation. ili. What conclusion can you reach about daily sales at this store.Question 2 The unit coordinator of the MBA statistics unit at Holmes institute wants to determine whether there are significant differences between student performance across campuses. A random sample of 18 students were selected with 6 students in each campus. The table below shows the student grades in T1 2022. Campus Location Melbourne Sydney Brisbane 75 55 77 68 70 55 79 65 70 90 60 60 65 70 65 72 78 70 At the 5% level of significance, is there evidence of a significant difference in students' performance between three campuses? Use the six steps process of hypothesis testing to answer the