Refer to Exhibit 9-5: n = 16 H 0: ? ? 80 x-bar = 75.607 Ha: ? < 80 ? = 8.246 Assume population is normally distributed. The test statistic equals a. -2.131 b. -0.53 c. 0.53 d. 2.131
Added by Charles S.
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607 (sample mean) - σ = 8.246 (population standard deviation) Show more…
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