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Using Table 8.1, a computer, or a calculator, determine the standard score that has the following percentage of the populatio
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Answer #1

We will use standard normal table to answer the following questions.

(a) 30% = 0.30

Standard score = -0.52

(b) 70% = 0.70

Standard score = 0.52

(c) 44% = 0.44

Standard score = -0.15

(d) 95% = 0.95

Standard score = 1.64

We have used excel to find the answers. We have to insert the percentages and mean 0 and standard deviation 1 to get the standard normal score.

Х =NORM.INV(0.30,0,1) ? x Function Arguments NORM.INV Probability 0.30 = 0.3 Mean 0 = 0 Standard_dev 1 = 1 = -0.524400513 Ret

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