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A normal distribution has a mean of 18 and a standard deviation of 5.Solve the following problems: (a)Between what two scores x and y (x

A normal distribution has a mean of 18 and a standard deviation of 5.Solve the following problems:

(a)Between what two scores x and y (x

a1) what is the value of x?

a2) what is the value of y?

(b)What percentage of scores fall between ten and thirty?

(c)Below what score did 20% of the results fall?

(d)What percentage of scores are above 25?

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