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. No 1 2 3 4 5 6 7 PR Tasks Select correct mufflers 1 4 5 5 5 9 3 3 100 2 2 Remove old muffler 5 7 7 5 7 6 6 85 3 Install new muffler 12 12 13 15 13 15 12 90 4 Inspect the work 4 3 3 4 3 3 3 90 5 Complete paperwork 8 7 9 10 8 9 7 85 Given that Azra does not want an error of more than 0.08 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: 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: Assume that the number of observations for the following tasks justifies the confidence level and accuracy mentioned above. Also note that Azra factors in a total of fatigue and personal allowance of 0.15 applied to job time. Provide the following results from your solution: Task Normal Time Standard Time #2 Remove old muffler min min #4 Inspect the work min min minutes. Provide the total standard time* for the whole job: *Round to the nearest hundredth, for example 8.45 minutes