, or intelligence quotient, is one way to measure a person’s ability to reason and  problem solve. The IQ population standard deviation 15 points. A statistics teacher claims  that students in his classes have an IQ greater than 100. He samples 20 students, and the  IQ scores are listed below: 86; 90; 110; 115; 100; 95; 91; 103; 98; 87; 105; 95; 103; 114; 102; 99; 120; 120; 93; 101 505 At the α = 0.05 level, is there evidence to support the teacher’s claim?

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