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In a random sample of 25 students at college, the average IQ was x = 103. Assume that the IQ of a student in college

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In a random sample of 25 students at college, the average IQ was x = 103. Assume that the IQ of a student in college follows aNormal distribution with unknown mean and standard deviation = 15.A 90% confidence interval for u is(78, 128).(97, 109).(98, 108).(102, 104).

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