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 27 29 18 33 31 S = 3.3.) 33 18 19 32 30 32 29 33 First find the null and alternative hypotheses. Which of the following correctly states the hypotheses? COA. Ho: 01 #62 O B. Ho: 01 > G2 O C. Hoi fa =n OD Heg
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 27 29 18 33 31 S = 3.3.) 33 18 19 32 30 32 29 33 First find the null and alternative hypotheses. Which of the following correctly states the hypotheses? COA. Ho: 01 #62 O B. Ho: 01 > G2 O C. Hoi fa =n OD Heg
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: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
31
S2 = 3.3.)
33 18 19
32
27
32 29
30
33
... ..
First find the null and alternative hypotheses. Which of the following correctly states the hypotheses?
O A. Ho: 01 72
Ha: 01 = 02
O B. Ho: 01 >02
Ha: 01<02
O C. Ho: 01 = 02
O D. Ho: 01 =02
Ha: 01>02
Ha: 01 #02
O E. Ho: 01 =02
Ha: 01<02
O F. Ho: 01 <o2
Ha: 0q> 02
nts
SCO
Compute the test statistic F.
Scor
(Round to three decimal places as needed.)
ess
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