Homework Homework 7 Score 0 of 1 pt 14 of 15 1 complete Prob

Homework: Homework 7 Score: 0 of 1 pt 14 of 15 (1 complete) Problem E.9 Professor Mary Beth Marrs took 8 hours to prepare the first lecture in a new course. Traditionally, she has experienced a 90% earning factor. Time spent by Mary to prepare the: 15 lecture hours (round your response to two decimal places) Save HW Score: 5.19%, 0.78 of 15 pts IE Question Help

Solution

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Given that it took 80 labor hrs to install first vending machine.

Learning Rate = 95%

Formula used

T × Lⁿ = Time required for the n th unit

T : - Time required for first unit

L:- Learning Rate

n := no of times T is doubled

n = 2

For the given scenario

Time required for fourth machine installation = 80X 0.95^2

= 72.2 hrs

Solution