Answer
95% confidence interval lies between 0.4039 and 0.5449.
Work Step by Step
By using Minitab, a 95% confidence interval is constructed. The steps are provided below:
Step 1: Insert the data in Minitab spreadsheet.
Step 2: Go to Stat and click the basic statistics.
Step 3: Select 1 proportion.
Step 4: Select summarized and click for hypothesis test.
Step 5: Go to option and enter confidence interval and alternative hypothesis.
Step 6: Click OK.
Hence, a 95% CI lies between 0.4039 and 0.5449.
