Solve the problem.
-464 randomly selected light bulbs were tested in a laboratory, 424 lasted more than 500 hours. Find a point estimate of the true proportion of all light bulbs that last more than 500 hours.
A)0.914
B)0.912
C)0.477
D)0.086

Question

Quizplus · Accepted Answer

The point estimate of the true proportion is found by dividing the number of successes (light bulbs lasting more than 500 hours) by the total number of trials. Here, it is 424/464 = 0.914.

Solve the Problem. -464 Randomly Selected Light Bulbs Were Tested in a Laboratory