exam Maths Puzzle Numerical Ability

(a+b)^-2/3
__________

(c+d)^-3/4

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exam Other Question

In order to use the test statistic for the difference between two sample means both samples must have a population of at least 30 and the samples must be from dependent populations. Is this answer true or false? Perform the indicated operation.

x squared - 3x OVER 5x squared TIMES 10x OVER x squared - 4x + 3