a) The standard time for this process = ____________ seconds (round your response to two decimal places).

b) The number of observations that are required for a 90% confidence level with 5% accuracy = _________ observations (round your response up to the next whole number).

The Dubuque Cement Company packs 80-pound bags of concrete mix Time-study data for the filing activity are shown in the following table. Because of the high physical demands of the job, the company's policy is a 20% allowance for workers (Round all intermediate calculation to two decimal places before proceeding with further calculations) Performance Observation (seconds) Element Rating 1 2 4 Grasp and place bag 110% 9 8 Fil bay 90% 36 40 38 112 Seal bag 105% 18 19 17 Place bag on conveyor 8 7 9 35 * Bag breaks open: included as delay in the allowance factor Conveyor jams, Included as delay in the allowance factor 16