Question

A some association On-Line Discount Broker Survey polls members on their experiences with discount brokers. As part of the survey, members were asked to rate the quality of the speed of execution with their broker as well as provide an overall satisfaction rating for electronic trades. Possible responses (scores) were no opinion (0), unsatisfied (I), somewhat satisfied (2), satisfied (3), and very satisfied (4). For each broker summary scores were computed by calculating a weighted average of the scores provided by each respondent. portion the survey results follow Brokerage Speed Satisfaction Scottrade, Inc. 3.2 3.6 Charles Schwab 2.8 2.6 Fidelity Brokerage Services 3.1 2.8 TD Ameritrade 3 7 3.1 E Trade Financial 2.7 2.8 Vanguard Brokerage Services 3 C 2.8 USAA Brokerage Services 2.9 2.6 Thinkorswim 3.9 3.6 Wells Fargo Investments 2,8 2.6 Interactive Brokers 3.1 2.7 Zecco.com 3.4 3.0 3.5 2.5 2.5 2.5 4.5 2,5 4.5 3.5 3.5 Speed of Exec ution Speed of Exec ution D. 4,5 4.5 3.5 3 2.5 2.5 2.5 3.5 2.5 3.5 4.5 4 4.5 Satisfaction Satisfaction Lо st Satisfaction Satisfaction uо st Select your answer - b. What does the scatter diagram developed in part (a) indicate about the relationship between the two variables? The scatter diagram indicates a -Select your answer- linear relationship between speed of execution rating and y = overall satisfaction rating for electronic trades. c. Develop the least squares estimated regression equation. Enter negative value as negative number Satisfaction = Speed (to 4 decimals) d. Provide interpretation for the slope of the estimated regression equation (to 4 decimals). So, a one unit-Select your answer - in the speed of execution rating will increase the overall satisfaction rating by approximately The slope of the estimated regression line is approximately points. increase their speed of execution rating from the current value of 2.7 to the average speed of e. Suppose ETrade Financial developed new software to increase their speed of execution rating. If the new software able execution rating for the other 10 brokerage firms that were surveyed, what value would you predict for the overall satisfaction rating? (to 3 decimals)