Researchers conducted an experiment to test the effects of alcohol. Errors were recorded in a test of visual and motor skills for a treatment group of 22 people who drank ethanol and another group of 22 people given a placebo. The errors for the treatment group have a standard deviation of 2.30, and the errors for the placebo group have a standard deviation of 0.85. Use a 0.05 significance level to test the claim that the treatment group has errors that va significantly more than the errors of the placebo group. Assume that the two populations are normally distributed. What are the null and alternative hypotheses? OA. Ho: 0=02 H₁:0² <0² OC. Ho: 002 H₁:0²=0²2 OB. Ho: 03 = 0² H₁:0² > 0² OD. Ho: 0=0² H₁:0² #0²

Researchers conducted an experiment to test the effects of alcohol. Errors were recorded in a test of visual and motor skills for a treatment group of 22 people who drank ethanol and another group of 22 people given a placebo. The errors for the treatment group have a standard deviation of 2.30, and the errors for the placebo group have a standard deviation of 0.85. Use a 0.05 significance level to test the claim that the treatment group has errors that va significantly more than the errors of the placebo group. Assume that the two populations are normally distributed. What are the null and alternative hypotheses? OA. Ho: 0=02 H₁:0² <0² OC. Ho: 002 H₁:0²=0²2 OB. Ho: 03 = 0² H₁:0² > 0² OD. Ho: 0=0² H₁:0² #0²

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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Researchers conducted an experiment to test the effects of alcohol. Errors were recorded in a test of visual and motor skills for a treatment group of 22 people who drank ethanol and another group of 22 people given a placebo. The errors for the treatment group have a standard deviation of 2.10, and the errors for the placebo group have a standard deviation of 0.83. Use a 0.05 significance level to test the claim that the treatment group has errors that vary significantly more than the errors of the placebo group. Assume that the two populations are normally distributed. What are the null and alternative hypotheses? OA. Ho: 002 OC. Ho: 0²=0 H₁:00 OB. Ho: 0²=0 H₁: 0>0 OD. Ho: 6²=0 H₁:
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