An exam - normal distribution

Five thousand students take an exam with a mean of 59 and a deviation of 8. How many students will score less than 75?

Correct answer:

n2 =  4886

Step-by-step explanation:

n=5000 m=59 σ=8  n2=n N(m,σ,s<75) N=0.9772  n2=n N=5000 0.9772=4886



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