The learning curve for a product is 90%. The first unit took 10 hours to complete. The manufacturer wants to determine how many hours the fourth unit will take by using the logarithmic method. The coefficient b for that calculation is approximately
A) -.1053.
B) -.1520.
C) -.3219.
D) .6931.
E) 8.1.

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The Answer of The learning curve for a product is 90%. The first unit took 10 hours to complete. The manufacturer wants to determine how many hours the fourth unit will take by using the logarithmic method. The coefficient b for that calculation is approximately
A) -.1053.
B) -.1520.
C) -.3219.
D) .6931.
E) 8.1.

The Learning Curve for a Product Is 90