were no opinion (0). unsatisfied (1). somevhat satisfied (2). satisfied (3). and very satisfied (4). For each broker, summary scores were computed by computing a veighted average of the scores provided by each respondent. A pertion of the survey results follow (AAI web site). (Let x, represent satisfaction with trade price. x, represent satisfaction with speed of ecution, and y represent overall satisfaction with electronic trades.) Satisfaction with with Trade Price Speed of Execution with Electronic Trades Satisfaction Overall Satisfaction Brokerage Scottrade. Ine. 24 3.4 2.5 Charles Schab 3.2 3.3 3.4 Fidelity Brekerage Services 3.1 3.4 3.9 TO Ameritrade 2.9 3.6 2.7 E"Trade Financial 2.9 3.2 2.9 (Net lated 2.5 3.2 2.7 Vanguard Brokerape Services 26 3.8 2.8 USAA Brokerage Services 24 3.8 3.6 Thinkorsvim 2.6 2.6 2.6 Wells Farge Investments 2.3 2.7 2.3 Interactive Brokers 3.7 4.0 4.0 Zecce.com 2.5 2.5 2.5 Firstrade Securities 2.0 3.0 4.0 Bank of America Investment Services 4.0 1.0 20 (a) Develop an estimated regression equation using trade price and speed of execution to predict the overal satisfaction with the broker. (Round your numerical values to four decimal places.) Interpret the coefficient of determination. (Round your ansver to te decimal places.) This regression model explains approximately x % of the variation in the values of overall satisfaction in the sample. . (b) Use the t test to determine the significance of each independent variable. Test whether the regression parameter , is equal to zero. Find the prvalue. (Round your answer to four decimal places.) Pvalue Jx What is the conelusion for the test at the 0.05 level of significance? o we fail to reject H. We cannet cenclude that there isa relationship betreen satisfaction with trade price and everall satisfaction with the electronic trade. lo we reject H. We cannet eonclude that there isa relationship beteen satisfaction with trade price and everal satisfaction with the electroenic trade. we reject H We can conclude that there is a relationship between satisfaction with trade price and everall satisfaction with the electronic trade. O we fail to reject H We can conclude that there is a relationship betvween satisfaction with trade price and overall satisfaction with the electronic trade. Test whether the regression parameter , is equal to zero. Find the prvalue. (Reund your answer to four decimal places.) pvalue