# stats- confidence intervals

**Question description**

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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