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ou ESTIOH 1 a} A researcher is interested in learning about the cumulative grade point averages {CGPA} of the students who enrolled in Statistics course this semester. There are three groups namelv Group A, Group E and Group 0. Sample are selected from each of the groups. i. Dene the population and variable of interest. {2 marks) ii. What is the sampling frame? {1 mark) iii. State the sampling technique use in this study {1 mark) iv. Suppose the researcher has determined the CGPA of each member of those groups. Would this represent a census or sample? Give your reason. {2 marks} b) The following table shows the number of days that a company took to receive shipments from the dayr it was ordered. i. Calculate the mean and variance of days that it took to receive the shipments {5 marks] ii. Calculate the mode and interpret the value. {4 marks)