Confidence Interval of Mean
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Press STAT and the right arrow twice to select TESTS. Use the down arrow to select 8:TInterval…
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Press ENTER. Use right arrow to select Stats (summary values rather than raw data). Enter mean, standard deviation, sample size, and
confidence level. Press down arrow to select Calculate and press ENTER.
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Results: The 95% confidence interval for the Student’s t Distribution
is 5.2 to 8.4 when the mean is 6.8, the standard deviation is 1.0, and the
sample size is 4. |
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