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(5pt) IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Letx= IQ of
- (5pt) IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Letx= IQ of an individual.
- X~ _____(_____,_____)
- Find the probability that the person has an IQ greater than 120. Include a sketch of the graph, and write a probability statement.
- The middle 95% of IQs fall between what two values? Sketch the graph and write the probability statement.
- Lily's IQ has a z-score of 2.3so what is her IQ?
- Charlie has a 91 IQ. What is the z-score of his IQ?
- (5pt) Which is more and how can we tell?Show all your work when finding these and indicate where you use a calculator.
- P( x > 3 ) when X~N(3 , 2.5)
- P( x> 3 ) when X~U(0,6)
- P( x>3 ) when X~B(4, 0.5)
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Intermediate Algebra
Authors: Marvin L Bittinger
11th Edition
0321968395, 9780321968395
