Consider the situation in Review Exercise 8.74. Suppose a
Chapter 9, Problem 8.75(choose chapter or problem)
Consider the situation in Review Exercise 8.74. Suppose a considerable eort is conducted to tighten the variability in the system. Following the eort, a random sample of size 40 is taken from the new assembly line and the sample variance is s2 =0 .188 ounces2.Do we have strong numerical evidence that 2 has been reduced below 1.0? Consider the probability P(S2 0.188 | 2 =1 .0), and give your conclusion.
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