Calculate the confidence intervals for the differences between means and compare
ID: 3378909 • Letter: C
Question
Calculate the confidence intervals for the differences between means and compare to the SPSS results and interpret them.
Group Statistics
group
N
Mean
Std. Deviation
Std. Error Mean
Cholesterol Levels
1
20
245.05
36.638
8.193
2
20
210.30
48.340
10.809
Independent Samples Test
Levene's Test for Equality of Variances
t-test for Equality of Means
F
Sig.
t
df
Sig. (2-tailed)
Mean Difference
Cholesterol Levels
Equal variances assumed
1.293
.263
2.562
38
.014
34.750
Equal variances not assumed
2.562
35.413
.015
34.750
Independent Samples Test
t-test for Equality of Means
Std. Error Difference
95% Confidence Interval of the Difference
Lower
Upper
Cholesterol Levels
Equal variances assumed
13.563
7.293
62.207
Equal variances not assumed
13.563
7.227
62.273
Group Statistics
group
N
Mean
Std. Deviation
Std. Error Mean
Cholesterol Levels
1
20
245.05
36.638
8.193
2
20
210.30
48.340
10.809
Explanation / Answer
Calculate the confidence intervals for the differences between means and compare
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