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--- b:head_first_statistics:constructing_confidence_intervals [2025/10/29 03:58] – [Four steps for finding confidence intervals] hkimscil
+++ b:head_first_statistics:constructing_confidence_intervals [2025/10/29 04:03] (current) – [Four steps for finding confidence intervals] hkimscil
@@ Line 75: / Line 75: @@
 {{:b:head_first_statistics:pasted:20191203-123432.png}}
-$$P(z_{a} < Z < z_{b}) = 0.95$$
+\begin{eqnarray*}
-$$P(Z < z_{a}) = 0.025$$
+P(z_{a} < Z < z_{b}) & = & 0.95 \\
-$$z_{a} = -1.96$$
+P(Z < z_{a}) & = & 0.025 \\
-$$P(Z > z_{b}) = 0.025$$
+z_{a} & = & -1.96 \\
-$$z_{b} = +1.96$$
+P(Z > z_{b}) & = & 0.025 \\
+z_{b} & = & +1.96 \\
+\end{eqnarray*}
 \begin{eqnarray*}