a. What is the sample size in the study? 105 b. How do you interpret the results of the Levene's test? (Type your answer and address both the significance and meaning of the result) c. What is the calculated t-test? d. What are the df for the t-test we use? 103 e. Are the groups significantly different from each other? f. Which group scored higher? Yes Group No Group The two groups are not significantly different_

MATLAB: An Introduction with Applications
6th Edition
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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1. The tables below show the results of an independent samples t-test in SPSS conducted
using the SPSS data we have been using this semester. Two groups ("Yes" and "No") are
compared on their "final". Yes and no refer to whether they attended the review sessions
or not.
Review the results carefully and answer the questions below. (12 points)
final
final
Attended review
sessions?
No
Yes
Equal variances
assumed
Equal variances not
assumed
Levene's Test for Equality of
Variances
F
Group Statistics
219
Sig.
N
.641
35
70
t
-2.693
d. What are the df for the t-test we use?
103
Mean
Independent Samples Test
-2.719
59.83
64.14
Std. Deviation
7.591
7.810
df Sig. (2-tailed)
103
.008
69.872
.008
e. Are the groups significantly different from each other?
f. Which group scored higher?
Yes Group
No Group
The two groups are not significantly different_
t-test for Equality of Means
Mean
Difference
-4.314
Std. Error
Mean
-4.314
1.283
.933
Std. Error
Difference
1.602
1.587
95% Confidence Interval of the
Difference
Lower
-7.491
a. What is the sample size in the study?
105
b. How do you interpret the results of the Levene's test? (Type your answer and address
both the significance and meaning of the result)
c. What is the calculated t-test?
-7.479
Upper
-1.137
-1.150
Transcribed Image Text:1. The tables below show the results of an independent samples t-test in SPSS conducted using the SPSS data we have been using this semester. Two groups ("Yes" and "No") are compared on their "final". Yes and no refer to whether they attended the review sessions or not. Review the results carefully and answer the questions below. (12 points) final final Attended review sessions? No Yes Equal variances assumed Equal variances not assumed Levene's Test for Equality of Variances F Group Statistics 219 Sig. N .641 35 70 t -2.693 d. What are the df for the t-test we use? 103 Mean Independent Samples Test -2.719 59.83 64.14 Std. Deviation 7.591 7.810 df Sig. (2-tailed) 103 .008 69.872 .008 e. Are the groups significantly different from each other? f. Which group scored higher? Yes Group No Group The two groups are not significantly different_ t-test for Equality of Means Mean Difference -4.314 Std. Error Mean -4.314 1.283 .933 Std. Error Difference 1.602 1.587 95% Confidence Interval of the Difference Lower -7.491 a. What is the sample size in the study? 105 b. How do you interpret the results of the Levene's test? (Type your answer and address both the significance and meaning of the result) c. What is the calculated t-test? -7.479 Upper -1.137 -1.150
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