[Solution Library] Suppose that IQs of West State University’s students can be described by a Normal model with mean 130 points and standard deviation 8
Question: Suppose that IQs of West State University’s students can be described by a Normal model with mean 130 points and standard deviation 8 points. Also suppose that IQs from East State University can be described by a Normal model with mean 120 points and a standard deviation 10 points. Answer the following questions:
- If a student is randomly selected from West State University, find the probability that this student’s IQ is at least 142 points.
- If four students are chosen at random from East State, find the probability that this group’s average is at least 130 points.
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