QUESTION 3 Two groups of drivers (single drivers and married drivers) are surveyed to see how long they will stops at the Rest & Recreation (R&R) for a rest when they travel for 'Balik Kampung' during Hari Raya holidays. The data were analyzed using SPSS with results as follows: Group Statistics Sid. Error Mean N Std. Deviation Mean Time spent Single Drivers 0.650 12 0.40458 0. 12198 at RAR [hours) Married Drivers 1.225 19 0.18972 0.04352 Independent Sample Test Time spent at RAR (in hours) Equal variances Equal variances not assumed Levene's Test for F D.043 Equality of Variances Sig 0.836 1-test for Equality 20 14.10 for Means Mean Difference 0.575 -0.575 Std. Error Difference 0.1071 0.1246 95% Confidence Lower R -0.8423 Interval of the Difference Upper -0.3077 Assuming the equal variance is assumed, answer the following questions: a) Show that the mean difference is - 0.575 (1 mark) bj Find the values of R and S which are the lower and upper limits of 95% confidence interval of the difference in time spent at RAR (in hours) between single and married drivers. (3 marks) c) From the results in b), is there enough evidence to indicate that there is a significant difference in time spent at R&R (in hours) between single and married 87