تم الحل ✓
categoryإحصاء
schoolبكالوريوس
event_available2026-07-15
السؤال
Transcribed Image Text:
A statistician wants to test for the equality of means in two independent samples drawn from
normal populations of people enrolled in a diet program. However, he will not perform the
equal-variance t-test of the difference between the population means if the condition necessary
for its use is not satisfied. The number of pound lost at the completion of the program data
follow: (20 points)
Sample 1
Sample 2
7
9
6
15 7
10
8
12
2
25 9
15
10
18
5
22 27
3
Can the statistician conclude at the 5% significance level that the required condition is not
satisfied?
Test statistic =
Critical Value(s) =
Conclusion:
Interpretation:
Estimate with 95% confidence the ratio of the two population variances.
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