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I'm referring to question 7 of April 2009, part (iii). Ignore the heading, as I don't know how to edit it!! Please refer to the solution. In the...
In the given question (ii), cant we use the formula ((n1-1)s1^2+(n2-1)s2^2)/(n1+n2-2)? On using the above formula, I got 62.05 which is nowhere...