Question: 23. According to survey, 64% of Americans between ages of 6 and 17 cannot pass a basic fitness test. A PE instructor wishes to determine if percentages of such students in different schools in his school district are the same. He administers a basic fitness test to 120 students in each of 4 schools. The results are shown here. At a=0.05, test the claim that the proportions who pass the test are equal.