In the Equation for Confidence Intervals $\bar{X} \pm z_{a}\left(\frac{s}{\sqrt{n}}\right)$ $Z_{a}$ Corresponds to ______

question 1

Multiple Choice

In the equation for confidence intervals, $\bar{X} \pm z_{a}\left(\frac{s}{\sqrt{n}}\right)$ , $Z_{a}$ corresponds to ______.

• A) the alpha we are using (the level of confidence)
• B) the standard deviation of our sample
• C) the variance of our sample
• D) the lower limit of our confidence interval

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