Question 1089133
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The sample size is n = 12


The sample mean is approximately m = 68.2667 (add up the values and divide by n = 12)


The sample standard deviation is approximately s = 13.2923 (use a calculator)


If the raw score is x = 45, then the z-score is...


{{{z = (x-m)/(s)}}}


{{{z = (45-68.2667)/(13.2923)}}}


{{{z = (-23.2667)/(13.2923)}}}


{{{z = -1.7504}}}


{{{z = -1.75}}}


This value is approximate


Therefore <font color=red>the final answer is choice A</font>


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