A test was conducted for two overnight mail delivery services. Two samples of identical deliveries were set up so that both delivery services were notified of the need for a delivery at the same time. The hours required to make each delivery follow. Do the data shown suggest a difference in the median delivery times for the two services? Use a 0.05 level of significance for the test. Use Table 1 of Appendix B. Click on the datafile logo to reference the data. DATA file Service Delivery 1 2 1 24.5 28.0 N 26.0 25.5 W 28.0 32.0 21.0 20.0 18.0 19.5 36.0 28.0 25.0 29.0 8 21.0 22.0 24.0 23.5 10 26.0 29.5 11 31.0 30.0 What is the z-statistic (to 2 decimals)? Enter negative values as negative number, if necessary. -0.94 0 What is the p-value (to 4 decimals)? 0.3472 X Conclude: Do not reject the null hypothesis Observe: There is not a significant difference