Posted by **Keisha** on Monday, May 5, 2014 at 2:45pm.

A student wants to test her hypothesis she gives each of her students an IO test. She finds that the average IQ score is 115 and the standard deviation for the class is 30. There are 22 students in the class. She also knows that the population average IQ is 100 points.

Ho:p=115

Ha=p>115.

What is the right formula and calculate the test statistics

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