Question 1115350
A simple random sample of 120 SAT scores has a mean of 1500. Assume that scores have a standard deviation of 175.construct a 99% confidence interval estimate of the mean SAT score.
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u = 1500
std = 175
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sample mean = 1500
ME = 2.5758*175 = 450.77
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99% CI:: 1500-450.77 < u < 1500+450.77 
99% CI:: 149.23 < u < 1950.77
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Cheers,
Stan H.
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