3 5 16 Q12 (1) In an examination, marks obtained by the students are shown below. Compute the standard deviation, and th

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3 5 16 Q12 1 In An Examination Marks Obtained By The Students Are Shown Below Compute The Standard Deviation And Th 1 (31.25 KiB) Viewed 65 times

3 5 16 Q12 (1) In an examination, marks obtained by the students are shown below. Compute the standard deviation, and the co-efficient of variation of the data given below: Marks Frequency 20-30 30-40 40-50 22 60-70 70-80 80-90 4 90-1004 (10Marks) (ii) Consider the following hypothesis test for 50 sample with sample mean of 14.15 and population standard deviation 3: 50-60 28 8 Page 4 of 5 H:A-15 H, 15 Compute test statistics and give conclusion using both p-value and critical value approach at a=0.05. (20.025 = 1.96, Area from normal distribution table = 0.4772) (6 Marks) a