For a one-tailed test (lower tail) at 89.89% confidence level, select one: a. -1.96 b. -1.27 c. -1.64 d. -1.53 Je Next page Tivity Jump to_
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89% confidence level. To do this, we can use a standard normal distribution table or a calculator. Using a calculator, we can use the inverse normal function (invNorm) and enter the confidence level and direction of the test (lower tail). invNorm(0.8989, 0, Show more…
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