IQ Intelligence quotient

Intelligence quotient (IQ) is a standardized score used as the output of standardized intelligence psychological tests to quantify a person's intelligence with the rest of the population (respectively, to a given group). Intelligence has an approximately normal distribution. Today, the most commonly used deviation score is with a population average of 100 and a population standard deviation of 15. What is the probability that a randomly selected person from the population has an IQ of less than 85?

Correct answer:

p =  0.1587

Step-by-step explanation:

m=100 s=15  x  N(m,s) p = N(x<85)  p=0.1587

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Looking for help with calculating arithmetic mean?
Looking for a statistical calculator?
Looking for a standard deviation calculator?
Would you like to compute the count of combinations?

You need to know the following knowledge to solve this word math problem:

We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: