searchers conducted an experiment to test the effects of alcohol. Errors were recorded in a test of visual d motor skills for a treatment group of 22 people who drank ethanol and another group of 22 people given a cebo. The errors for the treatment group have a standard deviation of 2.40, and the errors for the placebo up have a standard deviation of 0.88. Use a 0.05 significance level to test the claim that the treatment group s errors that vary significantly more than the errors of the placebo group. Assume that the two populations normally distributed. hat are the null and alternative hypotheses? A. H₁:0 ²/² = 0²/2 H₁:0² > 0²/2 C. Ho: 0² #0² H₁:0² = 0² -ntify the test statistic. (Round to two decimal places as needed.) e technology to identify the P-value. (Round to three decimal places as needed.) hat is the conclusion for this hypothesis test? OB. Ho: 0=02 H₁:0² #03 OD. H₂:0² = 0² H₁:0² <0² A. Reject Ho. There is sufficient evidence to support the claim that the treatment group has errors that vary significantly more than the errors of the placebo group. B. Fail to reject Ho. There is insufficient evidence to support the claim that the treatment group has errors that vary significantly more than the errors of the placebo group.
searchers conducted an experiment to test the effects of alcohol. Errors were recorded in a test of visual d motor skills for a treatment group of 22 people who drank ethanol and another group of 22 people given a cebo. The errors for the treatment group have a standard deviation of 2.40, and the errors for the placebo up have a standard deviation of 0.88. Use a 0.05 significance level to test the claim that the treatment group s errors that vary significantly more than the errors of the placebo group. Assume that the two populations normally distributed. hat are the null and alternative hypotheses? A. H₁:0 ²/² = 0²/2 H₁:0² > 0²/2 C. Ho: 0² #0² H₁:0² = 0² -ntify the test statistic. (Round to two decimal places as needed.) e technology to identify the P-value. (Round to three decimal places as needed.) hat is the conclusion for this hypothesis test? OB. Ho: 0=02 H₁:0² #03 OD. H₂:0² = 0² H₁:0² <0² A. Reject Ho. There is sufficient evidence to support the claim that the treatment group has errors that vary significantly more than the errors of the placebo group. B. Fail to reject Ho. There is insufficient evidence to support the claim that the treatment group has errors that vary significantly more than the errors of the placebo group.
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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Transcribed Image Text: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 2.40, and the errors for the placebo
group have a standard deviation of 0.88. 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: 0 = 02
H₁:0 ²/3 > 0²/2
OC. Ho: 0² #02
H₁: 0²1 = 0²/2
Identify the test statistic.
(Round to two decimal places as needed.)
Use technology to identify the P-value.
(Round to three decimal places as needed.)
What is the conclusion for this hypothesis test?
OB. Ho: 002
H₁: 0²1 20²2
OD. Ho: 0=0₂
H₁:0² <0²2
O A. Reject Ho. There is sufficient evidence to support the claim that the treatment group has errors that
vary significantly more than the errors of the placebo group.
O B. Fail to reject Ho. There is insufficient evidence to support the claim that the treatment group has
errors that vary significantly more than the errors of the placebo group.
O C.
Fail to reject Ho. There is sufficient evidence to support the claim that the treatment group has errors
that vary significantly more than the errors of the placebo group.
O D. Reject Ho. There is insufficient evidence to support the claim that the treatment group has errors that
vary significantly more than the errors of the placebo group.
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