A community for students.
Here's the question you clicked on:
 0 viewing
laurenbae
 3 years ago
HELP PLEASE!!!
Scores of an IQ test have a bell shaped distribution with a mean of 100 and a standard deviation of 20. use the empirical rule to determine the following.
a. What percentage of people has an IQ score between 40 and 160
b. what percentage of people has an IQ score less than 60 or greater than 140.
c. what percentage of people has an IQ score greater than 160
laurenbae
 3 years ago
HELP PLEASE!!! Scores of an IQ test have a bell shaped distribution with a mean of 100 and a standard deviation of 20. use the empirical rule to determine the following. a. What percentage of people has an IQ score between 40 and 160 b. what percentage of people has an IQ score less than 60 or greater than 140. c. what percentage of people has an IQ score greater than 160

This Question is Closed

slaaibak
 3 years ago
Best ResponseYou've already chosen the best response.1Tips: in a, they are saying the people are within 3 standard deviations from the mean. in b, they are more/less than 3 standard deviations from the mean. in c, they are strictly more than 3 standard deviations from the mean.

laurenbae
 3 years ago
Best ResponseYou've already chosen the best response.0how would i figure those out though?

slaaibak
 3 years ago
Best ResponseYou've already chosen the best response.1Sorry, my language got a bit mixed up there. in b, they are saying: The percentage of people that are more than 3 standard deviations to the left and right in c, the percentage of people that are more than 3 standard deviations to the right. This will make sense of you look at it visually
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.