2. The Welcher Adult Intelligence Test Scale is composed of a number of subtests.
On one subtest, the raw scores have a mean of 35 and a standard deviation of 6. Assuming these raw scores form a normal distribution:
a) What number represents the 65th percentile (what number separates the lower 65% of the distribution)? 37.31
b) What number represents the 90th percentile? 42.71