Confidence interval
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1. A random sample of 80 observations from a normally distributed population produced a mean x(bar over the x)= 22.6 . Find a 95% confidence interval for the population mean m if the population standard deviation o(looks like a small o with a tip this sign is sigma , i think ) = 2.56
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This provides an example of finding a 95% confidence interval for a given situation.
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Probability and statistic
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1. A random sample of 80 observations from a normally distributed population ...
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