stats- confidence intervals
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Confidence Interval, is not known or n<30.
For a group of 20 students taking a final exam, the mean heart rate was 96 beats per minute and the standard deviation was 5. Find the 95% confidence interval of the true mean.
1. Find the critical value
2. Find the margin of error: E =
3. Find the confidence interval: CI =
Write the conclusion.
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