Include degree of freedom in part B and not part d

V Expatol Ary has two ways to travel from her home In Norco to her office in Los Angeles. One Is to go via the 10 Freeway, and the other is to go vig 60 Freeway. In order to determine which way she should travel on a daily basis, Amy has recorded the travel times for samples of fifteen trips via the 10 Freeway and fifteen trips via the 60 Freeway. The following table gives the travel times [In minutes) for the thirty trips. Travel times In minutes 10 Freeway 69 73 74, 70 75 69, 74 72, 66. 74. 64 64 75, 77, 73 60 Freeway 77. 78 72, 76 69, 66, 74 72 77. 72, 71, 76 72. 77, 73 Send data to calculator Send data to Excel Assume that the two populations of travel times are normally distributed and that the population vorlances are equal Can we conclude, at the 0.05 level of signFicance, that u, the mean travel time via the 10 freeway, is different from jo, the mean travel time via the 60 freeway? Perform a two-talled test. Then complete the parts below. carry your Intermediate computations to three or more deamal places and round your answers as specified in the table. (If necessary, consult a list of () State the null hypothesis fig and the alternative hypatnests H H O (b) Determine the type of test statute to use (Choose one) (C) Find the value of the test statistic. { Round to three or more dedmal places.) (d) Find the two critical valves at the 0 05 level of significance. (Round to three or more decimal places and (=) Can we condude that Jj, the mean travel time vis the 10 freeway, is different from In, the mean travel time via the 60 freeway? Yes No