Question
In: Statistics and Probability
IQ scores (as measured by the Stanford-Binet intelligence test) are normally distributed with a mean of...
IQ scores (as measured by the Stanford-Binet intelligence test) are normally distributed with a mean of 95 and a standard deviation of 14. Find the approximate number of people in the United States (assuming a total population of 280,000,000) with an IQ higher than 126. (Round your answer to the nearest hundred thousand.) How many People?
Also please explain thoroughly and where the 0.5 and the other decimal number come from. Thanks in advance!
Solutions
Expert Solution
Solution:
Value from z-table:
In-case of any other doubt, please comment.
orchestra answered 2 years agoRelated Solutions
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