If Loraine takes a 25 question multiple choice test and receives a score of 56%, how many questions did she answer correctly? If her teacher used a 95% confidence interval to correctly estimate the true percentage of correct answers that she should have scored on this exam, what possible grades could the teacher reasonably assign to Loraine? Anything from % % .... EOE However, because Loraine's teacher must pick only one number to represent her grade, what percentage will the teacher typically assign as the grade? Number % The table below shows which hand is favored by each person from a sample of 100 people (50 male and 50 female). Use the information in the table to answer the following questions. : Determine the probability that a randomly selected person from the sample will be female or left-handed. 82 o % (Round to the nearest whole percentage) Compute a 95% confidence interval for the true proportion of the population that is left-handed. %to 49.6 o 0/0 Compute a 95% confidence interval for the true proportion of the population that is right-handed. 50.4 o % to 69.6 o % Oswald is registering for classes next semester. He uses the Quantitative Reasoning Process to decide between two teachers, Dr. Adams, and Dr. Baldwin . He speaks to 18 friends that previously took the course from Dr. Adams and also speaks to 16 friends that took it from Dr. Baldwin. Eight of his friends said they highly recommend Dr. Adams. Eleven of his friends highly recommend Dr. Baldwin. Based on Oswald's minimal study, what percent of students "highly recommend" Dr. Adams? 44.4 % (Round the final percentage to one decimal place) What percent "highly recommend" Dr.Baldwin? 68.8 O % (Round the final percentage to one decimal place) To be statistically accurate in his decision, Oswald decides to create a 95% confidence interval for his two percentages. What values does he find for each confidence interval? Confidence interval for the true proportion that "highly recommend" Dr Adams: (Enter the low value in the first blank and the high value in the second blank. Round values to one decimal place) 21.44 X to 67.4 X Confidence interval for the true proportion that "highly recommend" Dr. Baldwin:I . .. . v I .- '. .-_..._. ..._ ...._.. I.-._-.....'._,.- ._ _..- ..-_....... I...._-, What percent "highly recommend" Dr.Baldwin? 68.8 o % (Round the final percentage to one decimal place) To be statistically accurate in his decision, Oswald decides to create a 95% confidence interval for his two percentages. What values does he find for each confidence interval? Confidence interval for the true proportion that "highly recommend" Dr Adams: (Enter the low value in the first blank and the high value in the second blank. Ftound values to one decimal place) 21.44 0 %, 0' 67.4 0 % Confidence interval for the true proportion that "highly recommend" Dr. Baldwin: (Enter the low value in the first blank and the high value in the second blank. Ftound values to one decimal place) 21.4 o %, to 67.4 o %