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Use the normal distribution of IQscores, which has a mean of 100 and a standard deviation of 18 , and the following table with the
Use the normal distribution of IQscores, which has a mean of 100 and a standard deviation of 18, 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
What percentage of scores are greater than 145? Round to two decimal places.
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