SOLUTION: Use the given data to find the 95% confidence interval estimate of the population mean μ. Assume that the population has a normal distribution.
IQ scores of professional at
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Question 1001800: Use the given data to find the 95% confidence interval estimate of the population mean μ. Assume that the population has a normal distribution.
IQ scores of professional athletes:
Sample size n = 20
Mean x bar = 103
Standard deviation s = 15
When I did it myself the figures I got were 96.43<μ<109.57 but it's telling me this is incorrect and I don't know where i'm going wrong. Answer by jim_thompson5910(35256) (Show Source):
You can put this solution on YOUR website! You're using z when perhaps they want you to use t instead. If you do that, you'll have this confidence interval 95.98 < mu < 110.02
Another thought: maybe they want you to round to more decimal places?
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