R4.26. Cheating A Rutgers University study found that many high school students cheat on tests. The researchers surveyed a random sample of 4500 high school students nationwide; 74% of them said they had cheated at least once. a) Create a 90% confidence interval for the level of cheating among high school students. Don't forget to check the appropriate conditions. b) Interpret your interval. c) Explain what "90% confidence" means. d) Would a 95% confidence interval be wider or narrower? Explain without actually calculating the interval