(Solved): A competency test is modified so that the proportion of test-takers that pass is more than \( 75 \% ...

A competency test is modified so that the proportion of test-takers that pass is more than \( 75 \% \). A simple random sample of test-takers is collected to determine if the proportion of passers is greater than \( 75 \% \). The results of the sample are shown below. \[ n=\operatorname{Ex} 9 \]