According to a national statistics bureau, 3.7% of males living in the Southwest were retired exterminators. A researcher believes that the percentage has increased since then. She randomly selects...

According to a national statistics bureau, 3.7% of males living in the Southwest were retired exterminators. A researcher believes that the percentage has increased since then. She randomly selects 250 males in the Southwest and finds that 4 of them are retired exterminators.   Test the researcher's claim at the  level of significance=0.01.  Apply p-value and classical approaches.  Show step1-3.