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i A new method was developed to reduce variability of test scores by eliminating lower scores. Two groups, one called the control group and the other, the experimental group, both took the same test. The experimental group was taught using the new method. Do the data provide sufficient evidence to conclude that there is less variation among scores when the new method is used? Perform an F-test at the 1% significance level. (Note: s, = 6.3 and Control Experimental 30 19 29 26 33 36 29 18 33 33 18 19 31 S2 = 3.3.) 32 27 32 29 30 33 ..... 3.704 (Round to three decimal places as needed.) Find the critical value(s). The critical value(s) is(are). (Round to two decimal places as needed. Use a comma to separate answers as needed.) Interpret the results of the hypothesis test. Choose the correct answer below. O A. Reject H. The data do provide sufficient evidence to conclude that there is less variation among scores with the new method. cents O B. Reject Ho. The data do not provide sufficient evidence to conclude that there is less variation among scores with the new method. O C. Do not reject Ho. The data do not provide sufficient evidence to conclude that there is less variation among scores with the new method. O D. Do not reject Ho. The data do provide sufficient evidence to conclude that there is less variation among scores with the new method.

i A new method was developed to reduce variability of test scores by eliminating lower scores. Two groups, one called the control group and the other, the experimental group, both took the same test. The experimental group was taught using the new method. Do the data provide sufficient evidence to conclude that there is less variation among scores when the new method is used? Perform an F-test at the 1% significance level. (Note: s, = 6.3 and Control Experimental 30 19 29 26 33 36 29 18 33 33 18 19 31 S2 = 3.3.) 32 27 32 29 30 33 ..... 3.704 (Round to three decimal places as needed.) Find the critical value(s). The critical value(s) is(are). (Round to two decimal places as needed. Use a comma to separate answers as needed.) Interpret the results of the hypothesis test. Choose the correct answer below. O A. Reject H. The data do provide sufficient evidence to conclude that there is less variation among scores with the new method. cents O B. Reject Ho. The data do not provide sufficient evidence to conclude that there is less variation among scores with the new method. O C. Do not reject Ho. The data do not provide sufficient evidence to conclude that there is less variation among scores with the new method. O D. Do not reject Ho. The data do provide sufficient evidence to conclude that there is less variation among scores with the new method.

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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i A new method was developed to reduce variability of test scores by eliminating lower scores. Two groups, one called the control group and the other, the experimental group, both took the same test. The experimental group was taught using the new method. Do the data provide sufficient evidence to conclude that there is less variation among scores when the new method is used? Perform an F-test at the 1% significance level. (Note: s, = 6.3 and Control Experimental 30 19 29 26 33 29 18 33 31 36 S2 = 3.3.) 33 18 19 32 27 32 29 30 33 ... . 3.704 (Round to three decimal places as needed.) Find the critical value(s). The critical value(s) is(are). (Round to two decimal places as needed. Uşe a comma to separate answers as needed.) Interpret the results of the hypothesis test. Choose the correct answer below. O A. Reject Ho. The data do provide sufficient evidence to conclude that there is less variation among scores with the new method. tents O B. Reject Ho. The data do not provide sufficient evidence to conclude that there is less variation among scores with the new method. O C. Do not reject Ho. The data do not provide sufficient evidence to conclude that there is less variation among scores with the new method. O D. Do not reject Ho. The data do provide sufficient evidence to conclude that there is less variation among scores with the new method.
Transcribed Image Text:i A new method was developed to reduce variability of test scores by eliminating lower scores. Two groups, one called the control group and the other, the experimental group, both took the same test. The experimental group was taught using the new method. Do the data provide sufficient evidence to conclude that there is less variation among scores when the new method is used? Perform an F-test at the 1% significance level. (Note: s, = 6.3 and Control Experimental 30 19 29 26 33 29 18 33 31 36 S2 = 3.3.) 33 18 19 32 27 32 29 30 33 ... . 3.704 (Round to three decimal places as needed.) Find the critical value(s). The critical value(s) is(are). (Round to two decimal places as needed. Uşe a comma to separate answers as needed.) Interpret the results of the hypothesis test. Choose the correct answer below. O A. Reject Ho. The data do provide sufficient evidence to conclude that there is less variation among scores with the new method. tents O B. Reject Ho. The data do not provide sufficient evidence to conclude that there is less variation among scores with the new method. O C. Do not reject Ho. The data do not provide sufficient evidence to conclude that there is less variation among scores with the new method. O D. Do not reject Ho. The data do provide sufficient evidence to conclude that there is less variation among scores with the new method.
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