Find each of the following. Enter your answers rounded $t$ Part 1 of 5 $z_{\alpha / 2}$ for the $95 \%$ confidence interval \[ z_{\alpha / 2}=\square \]

Step 1 ：The question is asking for the z-score for a 95% confidence interval. The z-score is a measure of how many standard deviations an element is from the mean.

Step 2 ：In a normal distribution, a 95% confidence interval corresponds to a z-score of approximately 1.96. This is because 95% of the data in a normal distribution is within 1.96 standard deviations of the mean.

Step 3 ：Therefore, we can calculate this directly.

Step 4 ：Final Answer: The z-score for a 95% confidence interval is approximately \( \boxed{1.96} \).