9.62 Traffic Tickets An Ontario website (www.trafficticket.com) claims "We fully dismiss [at least] 94% of all cases."

a. Suppose that we examine 25 cases and exactly 15 were fully dismissed. Would you reject the claim of 94% or more made by the website?

b. Suppose that the records for the past year indicate that of 442 cases, 260 cases were fully dismissed. If this year is typical of all years, find a 95% confi- dence interval for p, the true proportion of fully dismissed cases.

c. Using the result of part

b, are you willing to reject a figure of 94% or greater for the true proportion of fully dismissed cases? Explain.