Question

The formula used to calculate a confidence interval for the mean of a normal population when n is small is the following: x? ± (t-critical value) s/?n What is the appropriate t critical value for each of the following confidence levels and sample sizes? Round to the nearest two decimal places. 95% confidence level, n=17, t=? 95% confidence level, df=8, t=? 90% confidence level, n=13, t=?

          The formula used to calculate a confidence interval for the mean of a normal population when n is small is the following:

x? ± (t-critical value) s/?n

What is the appropriate t critical value for each of the following confidence levels and sample sizes? Round to the nearest two decimal places.

95% confidence level, n=17, t=?
95% confidence level, df=8, t=?
90% confidence level, n=13, t=?

The formula used to calculate a confidence interval for the mean of a normal population when n is small is the following:

x? ± (t-critical value) s/?n

What is the appropriate t critical value for each of the following confidence levels and sample sizes? Round to the nearest two decimal places.

95% confidence level, n=17, t=?
95% confidence level, df=8, t=?
90% confidence level, n=13, t=?

Added by Zachary H.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Joanna Quigley

06/17/2023

Step 1

The question asks for the t-critical values for different confidence levels and sample sizes (or degrees of freedom). The t-critical value is a point on the t-distribution that is associated with a specific confidence level. It is used to calculate the confidence Show more…

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The formula used to calculate a confidence interval for the mean of a normal population when n is small is the following: x̄ ± (t-critical value) s/∔n What is the appropriate t critical value for each of the following confidence levels and sample sizes? Round to the nearest two decimal places. 95% confidence level, n=17, t=? 95% confidence level, df=8, t=? 90% confidence level, n=13, t=?