Question: SECTION A Answer ALL the questions in this section. Question 1 (30 Marks) The following case study was done in order to determine optimum training

SECTION A Answer ALL the questions in this section. Question 1 (30 Marks) The following case study was done in order to determine optimum training times. 50 members of a gym were monitored and the length of their training sessions (in minutes) were recorded. The results are presented in the grouped frequency distribution below. (i) (iii) (iv) (v) (vi) Length of session (minutes) Frequency 20 < 40 40 < 60 60 < 80 80 < 100 100 120 120 140 Show that Z=16. 7 11 Z 9 5 2 50 [30 MARKS] (2) (8) (5) (5) What information about the skewness of the data can be inferred from your answers to (ii), (iii) and (iv) above? (2) Calculate the estimated mean length of a training session. Compute the median. Determine the mode. Calculate the standard deviation. (8)

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