\textbf{Type II error ($\beta$): the error of failing to reject the null hypothesis when it is false.~} 
\textbf{A statistical test involves the following null and alternative hypotheses.~}  \textbf{H0: $\mu$ = 64}  \textbf{Ha: $\mu$ \textgreater{} 64}  \textbf{Which of the following describes a Type II error?} 

1. \textbf{Failing to reject the null hypothesis when the population mean is 64} 
2. \textbf{Failing to reject the null hypothesis when the population mean is greater than 64} 
3. \textbf{Rejecting the null hypothesis when the population mean is 64} 
4. \textbf{Rejecting the null hypothesis when the population mean is greater than 64} 
5. \textbf{Failing to reject the null hypothesis when the p-value is less than the significance level} 