The IQs of students at an Elementary School were measured and found to be normally distributed with a mean of 100 and a standard deviation of 20. Round your answers to four decimal places, if necessary.

Find the probability that a student selected at random will have an IQ of 140 or higher.

__________

Find the probability that a student selected at random will have an IQ of 120 or higher.

__________

Find the probability that a student selected at random will have an IQ of between 100 and 120.

__________

Find the probability that a student selected at random will have an IQ of 90 or less.

__________

Question

The IQs of students at an Elementary School were measured and found to be normally distributed with a mean of 100 and a standard deviation of 20. Round your answers to four decimal places, if necessary.
​
Find the probability that a student selected at random will have an IQ of 140 or higher.
​
__________
​
Find the probability that a student selected at random will have an IQ of 120 or higher.
​
__________
​
Find the probability that a student selected at random will have an IQ of between 100 and 120.
​
__________
​
Find the probability that a student selected at random will have an IQ of 90 or less.
​
__________

Quizplus · Accepted Answer

The Answer of The IQs of students at an Elementary School were measured and found to be normally distributed with a mean of 100 and a standard deviation of 20. Round your answers to four decimal places, if necessary.
​
Find the probability that a student selected at random will have an IQ of 140 or higher.
​
__________
​
Find the probability that a student selected at random will have an IQ of 120 or higher.
​
__________
​
Find the probability that a student selected at random will have an IQ of between 100 and 120.
​
__________
​
Find the probability that a student selected at random will have an IQ of 90 or less.
​
__________

The IQs of Students at an Elementary School Were Measured