Scores of an IQ test have a​ bell-shaped distribution with a mean of
100 and a standard deviation of
19. Use the empirical rule to determine the following.
​(a) What percentage of people has an IQ score between
81 and
119​?
​(b) What percentage of people has an IQ score less than
43 or greater than
157​?
​(c) What percentage of people has an IQ score greater than
119​?
Question content area bottom
Part 1
​(a)
enter your response here
​% ​(Type an integer or a​ decimal.)
Part 2
​(b)
enter your response here
​% ​(Type an integer or a​ decimal.)
Part 3
​(c)
enter your response here
​% ​(Type an integer or a​ decimal.)
Scores of an IQ test have a​ bell-shaped distribution with a mean of
100 and a standard deviation of
19. Use the empirical rule to determine the following.
​(a) What percentage of people has an IQ score between
81 and
119​?
​(b) What percentage of people has an IQ score less than
43 or greater than
157​?
​(c) What percentage of people has an IQ score greater than
119​?
Question content area bottom
Part 1
​(a)
enter your response here
​% ​(Type an integer or a​ decimal.)
Part 2
​(b)
enter your response here
​% ​(Type an integer or a​ decimal.)
Part 3
​(c)
enter your response here
​% ​(Type an integer or a​ decimal.)