Suppose a firm that produces light bulbs wants
Suppose a firm that produces light bulbs wants to know whether it
can say that its light bulbs typically last more than 1500 hours. Hoping to find support for their claim, the firm collects a random sample of n = 25 light bulbs and records the lifetime (in hours) of each bulb. The information related to the hypothesis test is presented below.
Test of H0: 1500 versus H1: > 1500
Sample mean 1509.5
Sample standard deviation 24.27
What is the test value that you would use to conduct this test?
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