For the test described in Exercise 10 32 assume that the
For the test described in Exercise 10.32, assume that the true population mean for the new booklet is μ = 2.80 hours. Under this assumption, what is the probability that the false null hypothesis, H0: μ ≥ 3.00 hours, will be rejected?
In exercise
A manufacturer of electronic kits has found that the mean time required for novices to assemble its new circuit tester is 3 hours, with a standard deviation of 0.20 hours. A consultant has developed a new instructional booklet intended to reduce the time an inexperienced kit builder will need to assemble the device. In a test of the effectiveness of the new booklet, 15 novices require a mean of 2.90 hours to complete the job.
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