Use the information given in question 49 to test, at the 1%level of significance, the null hypothesis that less than 80 % of those who take the course pass the bar exam on the first try.

Question 49

Ed’s bar exam review claims that 90% of the people who take its review course pass the bar exam on the first try. A random sample of 500 people who took the course reveals that 425 passed the bar exam on the first try. Test, at the 5 %

level of significance, the null hypothesis that at least 90 % of those who take the review course pass the bar exam on the first try.