Question
Use the normal distribution of IQ scores, which has a mean of 130 and a standard deviation of 13, and the following table with the
Use the normal distribution of IQ scores, which has a mean of 130 and a standard deviation of 13, and the following table with the standard scores and percentiles for a normal distribution to find the indicated quantity.
Standard score Percent -3.0 0.13 -2.5 0.62 -2 2.28 -1.5 6.68 -1 15.87 -0.9 18.41 -0.5 30.85 -0.1 46.02 0 50.00 0.10 53.98 0.5 69.15 0.9 81.59 1 84.13 1.5 93.32 2 97.72 2.5 99.38 3 99.87 3.5 99.98
The percentage of scores between 110.5 and 143 is _________ %?
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