Question

A standardized mathematics test given to 14,000 students had the scores normally distributed. The mean was 850 and the standard deviation was 75. A student scoring below 775 points was deficient in mathematics. About how many students were rated deficient? Please help ASAP!!! :(
775 = µ - 1σ
Consult your Z table to find the probability p of that.
multiply p * 14000

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