i) Let X be a random variable that is approximately normal. Assume the population standard deviation is σ = 11.6. Calculate the sample size needed to obtain a 95% two-sided confidence interval within a margin of error, E=2. Your answer should be an integer ii) Using the t-table, determine the critical value(s) (t-value(s) that delineates the boundary of the rejection region) for a right-tailed test with a sample size of n=19 and a level of significance of α = 0.05. Group of answer choices 1.740 -1.734 1.734 ±2.101 -1.740 ±2.110

i) Let X be a random variable that is approximately normal. Assume the population standard deviation is σ = 11.6. Calculate the sample size needed to obtain a 95% two-sided confidence interval within a margin of error, E=2. Your answer should be an integer ii) Using the t-table, determine the critical value(s) (t-value(s) that delineates the boundary of the rejection region) for a right-tailed test with a sample size of n=19 and a level of significance of α = 0.05. Group of answer choices 1.740 -1.734 1.734 ±2.101 -1.740 ±2.110

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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