Bicycles arrive at a bike shop in boxes. Before they can be sold, they must be unpacked, assembled, and tuned Phase Mean SD (lubricated, adjusted, etc.). Based on past experience, the shop manager creates a model of how long this may take Unpacking 4.1 0.8 based on the assumptions that the times for each setup phase are independent, each phase follows a Normal Assembly 23.9 2.1 model, and the means and standard deviations of the times in minutes are as shown in the table. Complete parts Tuning 13.8 2.6 a) and b). a) What are the mean and the standard deviation for the total bicycle setup time? (Round to two decimal places as needed.)