# Precision Doors is an organization that installs new garage doors on residential homes. Suppose the installation time for a residence

## Question:

Precision Doors is an organization that installs new garage doors on residential homes. Suppose the installation time for a residence follows the uniform distribution with a minimum time of 190 minutes and a maximum time of 370 minutes.

a. What is the probability that an installation will require less than 4 hours to complete?

b. What is the probability that an installation will require more than 5 hours to complete?

c. What is the probability that an installation will require between 250 and 350 minutes to complete?

d. Calculate the mean and standard deviation for this distribution.

e. Precision Door has a goal that 80% of the time, the installation time for a residence will be less than 6 hours. Is this goal being achieved?

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