Retail = cost*(1+markup/100)
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You need the mean and standard deviation in order to calculate the z-score. Neither are given.
It is 67%.
the answer is 1100 and can be obtained by any small calculator if you multiply the principal amount by your given percentage and then press the % key.
78% I just had this question on apex
P(R) = 0.7The correct choice of answer is B. 71%.