The assembly time for a product is uniformly distributed between 6 to 10 minutes.The probability of assembling the product in 7 minutes or more is
A) 0.25
B) 0.75
C) zero
D) 1

Question

Quizplus · Accepted Answer

Since the assembly time is uniformly distributed between 6 to 10 minutes, the total area under the probability density function is 1. The probability of assembling the product in 7 minutes or more is equal to the area under the density function from 7 to 10 minutes.

Area = (10-7)/(10-6) = 3/4 = 0.75

Therefore, the probability of assembling the product in 7 minutes or more is 0.75 or 75%. Hence, the best answer choice is B.

The Assembly Time for a Product Is Uniformly Distributed Between