Question: Section A 76 80 79 79 87 60 72 58 68 65 74 70 Section B 77 84 90 66 64 93 78 64 74

Section A 76 80 79 79 87 60 72 58 68 65 74 70

Section B 77 84 90 66 64 93 78 64 74 78 93 76

For the 12 observations of marks selected for sections 'A' and 'B' each.

I. Find proportion of marks more than 87 for sample selected for each section.

II. Obtain 98% confidence interval for the difference of proportions 1- 2 of the marks more than 87 obtained by students in section 'A' and 'B'.

III. Interpret confidence interval.

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