Posted by **Sarah** on Tuesday, November 1, 2011 at 3:37pm.

The time necessary to assemble a discount store display is normally distributed with μ = 5 minutes and σ = 30 seconds. A large number of potential employees are timed assembling a practice display. How much time (in minutes) should the personnel manager allow the potential employees to assemble the display if the store wants only 80% of the people to complete the task?

a.4.86

b.5.0

c.5.42

d.5.89

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