Given mean of the scores(M)= 568
Standard deviation
According to 68-95-99.7 rule:
Pr stands for probability
Here 0.68 implies 68%, 0.95 implies 95% and 0.997 implies 99.7%
We need to find the percentage of people scoring below 232
568-(3*112)=232
568+(3*112)=904
this falls in the third interval which can be expressed as:
this implies that the probability of scoring more than 904 or
less than 232
Here 0.003 corresponds to 100-99.7=0.3%
Considering equal percentage of people below 232 and above 904,
THE PERCENTAGE OF PEOPLE SCORING BELOW 232 is (0.3/2)=0.15%
HW Score: 23 33%, 7 of 30 Question Help Scores on the GRE (Graduate Record Examination)...
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