Solve the problem. Round the point estimate to the nearest thousandth.
-445 randomly selected light bulbs were tested in a laboratory, 316 lasted more than 500 hours. Find a point estimate of the proportion of all light bulbs that last more than 500 hours.
A) 0.415
B) 0.708
C) 0.710
D) 0.290

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Quizplus · Accepted Answer

The point estimate of the proportion of all light bulbs that last more than 500 hours is 316/445 = 0.710.

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