A) Scores on an Statistics test are normally
distributed with a mean of 75 and a standard
deviation of 2.5. What percentage will score
between 70 and 80 on this test?

2

step-by-step explanation:

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6(h+1)/2=a

a=area

step-by-step explanation:

its the same thing as a square or rectangle but after multiplying two sides you need to divide it by two.