Use the function below: trig graph with points at 0, 1 and pi over 2, 5 and pi, 1 and 3 pi over 2, negative 3 and 2 pi, 1 what are the amplitude and midline? amplitude: 5; midline: y = 1 amplitude: 5; midline: y = 0 amplitude: 4; midline: y = 1 amplitude: 4; midline: y = 0 question 7(multiple choice worth 5 points) (09.02 mc) maryann is testing the effectiveness of a new acne medication. there are 100 people with acne in the study. fifty-five patients received the acne medication, and 45 other patients did not receive treatment. thirty of the patients who received the medication reported clearer skin at the end of the study. twenty-two of the patients who did not receive medication reported clearer skin at the end of the study. what is the probability that a patient chosen at random from this study took the medication, given that they reported clearer skin? 55% 58% 38% 43% question 8(multiple choice worth 5 points) (09.05 mc) the life expectancy of a typical lightbulb is normally distributed with a mean of 2,100 hours and a standard deviation of 40 hours. what is the probability that a lightbulb will last between 1,965 and 2,165 hours? 0.8835 0.9820 0.9233 0.9480 question 9(multiple choice worth 5 points) (08.08 mc) identify the sequence graphed below and the average rate of change from n = 0 to n = 3. coordinate plane showing the point 2, 10, point 3, 5, point 4, 2.5, and point 5, 1.25 an = 8(one half)n − 2; average rate of change is −3 an = 10(one half)n − 2; average rate of change is negative thirty five thirds an = 8(one half)n − 2; average rate of change is 3 an = 10(one half)n − 2; average rate of change is thirty five thirds question 10(multiple choice worth 5 points) (09.08 mc) a company offered one half of its employees a bonus if the production of light bulbs increased by 20%. the other half of the employees was not offered a bonus. as the end of the month, production in the group that did not get the bonus offer increased by a mean of 15 and production in the bonus group increased by a mean of 10. what is the correct order of steps to determine if the results are significant? randomly separate the employees’ individual results into two groups. calculate the mean of each group. calculate the difference of the means. run the experiment many times. calculate the probability of a difference of 5. a, b, c, d, e d, e, a, b, c c, e, a, b, d a, b, d, c, e question 11(multiple choice worth 5 points) (09.03 mc) a group of people were given a personality test to determine if they were type a or type b. the results are shown in the table below: male female type a 55 75 type b 48 22 compare p(female or type b) with p(female | type b). there is not enough information. p(female or type b) > p(female | type b) p(female or type b) = p(female | type b) p(female or type b) < p(female | type b) question 12(multiple choice worth 5 points) (09.01 lc) todd is playing a board game and rolls two number cubes. let a = {the sum of the number cubes is even} and let b = {the sum of the number cubes is divisible by 2}. list the outcomes in a ∩ b. {3, 6, 9, 12} {2, 4, 6, 8, 10, 12} {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} {0,2,4,6,8,12} question 13(multiple choice worth 5 points) (09.06 mc) a hospital gives a survey to all surgical patients asking them to rate the quality of their hospital experience. one month after surgery, the hospital contacts the patients again to ask if there were any complications from the surgery. last year, the results of the surveys showed that of the patients who had a poor hospital experience, 23% had post-surgical complications. what conclusion can be drawn from this study? some patients who have a poor hospital experience also have post-surgical complications. post-surgical complications cause poor hospital experiences. most patients who have a poor hospital experience also have post-surgical complications. poor hospital experiences cause post-surgical complications. question 14(multiple choice worth 5 points) (10.05 mc) simplify: (sin θ − cos θ)2 + (sin θ + cos θ)2 1 2 sin2 θ cos2 θ question 15(multiple choice worth 5 points) (09.07 mc) a random sample of 145 students is chosen from a population of 4,250 students. if the mean iq in the sample is 130 with a standard deviation of 7, what is the 90% confidence interval for the students' mean iq score? 98.98−101.02 109−112. 125−135 129.05−130.95 you must check the box below prior to submitting your exam! check this box to indicate you are ready to submit your exam explorer toolbox workload my folders current course: instructors monitor all areas of a student's account student e-mail accounts are to be used for flvs course-related email only and not for general introductions or spamming of people in your address book. remember to click the logoff link when you have completed your work in the course. fdk351.03