icon (B) the subje did not Inoked ) (C) the s (D) the 5. Students in a large statistics class were randomly divided into two groups of 20 each. The first group took the midterm exam with soft music playing in the background while the second group took the exam with no music playing. The average scores of the two groups on the exam were compared. Create an outline showing how the researchers could carry out a completely randomized design for this experiment. (3 pts) 6. A researcher studied whether friendship affects the prices people set for selling things. She had 80 students all imagine selling the same item, in this case a gently-used graphing calculator. Half the students, assigned at random, imagined selling the calculator to a stranger. The other half imagined selling the calculator to a friend. Then the students were asked to set the asking price of the calculator. On average, those selling to friends asked lower prices than those selling to strangers. The results of this study are given in the table below: Mean asking price for the calculator Selling to a friend $48.00 Selling to a stranger $58.00 a) Find the difference in mean asking price for the calculator (friend - stranger). Explain what this means in context. (2 pts) b) Two hundred trials of a simulation were performed to see if the differences in the two mean asking prices (friend - stranger) would happen only due to chance variation in random assignment, assuming that whether or not you were selling to a friend or a stranger didn't matter in determining the asking price. Difference in Mean Asking Price (Friend - Stranger) is Difference Use the results of the simulation above to determine if the difference in mean asking prices between selling to a friend and selling to a stranger is statistically significant. Explain your reasoning. (3 pts)