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Consider the following ogive for the weight distribution (in pound) of a randomly selected class with 30 students. Weight Distribution of 30 students 30 25 20 15 Cumulative Frequency 10 5 0 X Y Weight (pound) Suppose X = 71.5 + W pounds and Y = 76.5 + W pounds. Find: (a) Class width. (1 mark) (b) Frequency of the 5th class. (1 mark) (c) Relative frequency of the 5th class. (1 mark) (d) Class midpoint of the 4th class. (1 mark) (e) Class boundaries of the 2nd class. (2 marks) (f ) Class limits of the 3'd class. (2 marks) (g) Estimate the total number of students in the sample with weight less than or equal to (82.5 + W) pounds. (2 marks)