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1. If the variance is unknown and the sample size is small, which test statistic is appropriate? O A. t-test O B. z-test O C. two-tailed test O D. one-tailed test

1. If the variance is unknown and the sample size is small, which test statistic is appropriate? O A. t-test O B. z-test O C. two-tailed test O D. one-tailed test

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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1. If the variance is unknown and the sample size is small, which test 3. In a sample n=100 selected from a normal population x = 56 and s = 12, statistic is appropriate? what statistical test is applicable? 5. Which of the following graphs of rejection region show t > 2.074? A. В. С. D. A. t-test A. t-test B. z-test B. z-test А. C. two-tailed test C. left-tailed test В. D. one-tailed test D. two-tailed test C. D. 2. For a two-tailed test with variance unknown, n= 19, and a = 0.05, what 4. Which of the following is the sketch of the normal curve if z > 1.645? is the critical value? А. В. С. D. A. ±2.092 А. B. ±2.101 В. C. +2.145 С. D. ±2.878 D.
Transcribed Image Text:1. If the variance is unknown and the sample size is small, which test 3. In a sample n=100 selected from a normal population x = 56 and s = 12, statistic is appropriate? what statistical test is applicable? 5. Which of the following graphs of rejection region show t > 2.074? A. В. С. D. A. t-test A. t-test B. z-test B. z-test А. C. two-tailed test C. left-tailed test В. D. one-tailed test D. two-tailed test C. D. 2. For a two-tailed test with variance unknown, n= 19, and a = 0.05, what 4. Which of the following is the sketch of the normal curve if z > 1.645? is the critical value? А. В. С. D. A. ±2.092 А. B. ±2.101 В. C. +2.145 С. D. ±2.878 D.
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