Scores of an IQ test have a bell-shaped distribution with a mean of 100
and a standard deviation of
16.
Use the empirical rule to determine the following.
(a) What percentage of people has an IQ score between
68
and
132?
(b) What percentage of people has an IQ score less than
52
or greater than
148?
(c) What percentage of people has an IQ score greater than
132?

The table below represents the displacement of a fish from its reef as a function of time: time (hours) x displacement from reef (feet) y 0 4 1 64 2 124 3 184 4 244 part a: what is the y-intercept of the function, and what does this tell you about the fish? (4 points) part b: calculate the average rate of change of the function represented by the table between x = 1 to x = 3 hours, and tell what the average rate represents. (4 points) part c: what would be the domain of the function if the fish continued to swim at this rate until it traveled 724 feet from the reef? (2 points)