Installing a muffler at Barut Garage, Inc. involves a five work tasks. Azra has timed workers performing these tasks seven times, with the results (in minutes) shown in the following table. Given that Azra does not want an error of more than 0.07 and a confidence level less than 0.95 answer the following: Provide the z-score: Round to the nearest hundredth, for example 4.22 Does the number of observations for the following tasks warrant such confidence level? Enter YES or NO. Task \# 3 Install new muffler : Task \# 5 Complete paperwork : What are the required numbers of observations for these tasks? Enter the number. Task \# 3 Install new muffler : Task \# 5 Complete paperwork : time. Provide the following results from your solution: Provide the total standard time* for the whole job: minutes