Problem Set 2

I’m studying for my Probability class and don’t understand how to answer this. Can you help me study?

Problem 1

Suppose a simple random sample of 150 students is drawn from a population of 3000 college students. Among sampled students, the average IQ score is 115 with a standard deviation of 10. What is the 99% confidence interval for the students’ IQ score?

(A) 115 + 0.01
(B) 115 + 0.82
(C) 115 + 2.1
(D) 115 + 2.6
(E) None of the above

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