The accounting department at Weston Materials Incorporated. a national manufacturer ofunattached garages, reports that it takes two construction workers a mean of 32 hours and a standard deviation of2 hours to erect the Red Barn model. Assume the assembly times follow the normal distribution. a-1. Determine the zvalues for 29 and 34 hours. [A negative amount should be indicated by a minus sign. Round zvalue to 2 decimal places and your final answer to 2 decimal places.) 29 hours corresponds to z 34 hours corresponds to z a-2. What percent ofthe garages take between 32 hours and 34 hours to erect? [Round zvalue to 2 decimal places and your nal answer to 2 decimal places.] _:|E b. What percent ofthe garages ake between 29 hours and 34 hours to erect? {Round zvalue to 2 decimal places and your final answer to 2 decimal places] _:|E c. What percent of the garages take 28.7 hours or less to erect? {Round zualue to 2 decimal places and your final answer to 2 decimal places} cl. Of the garages, 5% take how many hours or more to erect? {Round your answer :01 decimal place.} -:|