Question

7 multiple choice 4 points determine the confidence level. determine the confidence level for confidence interval shown in the figure below. 98% 95% 90% 80% 99%

Explanation:

Step1: Recall the formula for confidence level

The confidence level is calculated as \(1-\alpha\).

Step2: Find the value of \(\alpha\)

Given \(\frac{\alpha}{2}=0.10\), then \(\alpha = 2\times0.10=0.20\).

Step3: Calculate the confidence level

Using the formula \(1 - \alpha\), we substitute \(\alpha = 0.20\). So, \(1-0.20 = 0.80\) or \(80\%\).

Answer:

\(80\%\)