YPOTHESIS TESTING Lesson : Test of Means Two groups of experimental rats were injected with tranquilizer at 1.0mg dose and at 1.5 mg dose, respectively. The time given in seconds that took them to fall asleep is hereby given in the table below. A B 1 Dosage A Dosage B (1.0 mg) (1.5 mg) 2 9.8 12 3 13.2 7.4 4 11.2 9.8 5 9.5 11.5 6 13 13 7 12.1 12.5 8 9.8 9.8 9 12.3 10.5 10 7.9 13.5 11 10.2 12 9.7 Using the MS Excel, run an independent samples t test at to test the null hypothesis that there is no significant difference brought about by the dosages on the length of time it took for the rats to fall asleep. Hint: Select t-test: Two Samples Assuming Unequal Variances Ho There is no significant difference brought about by the dosages on the length of time it took the rats to fall asleep. H1 There is a significant difference brought about by the dosages on the length of time it took for the rats to fall asleep. Significance level a = 0.1 df = n1 + n2 – 2 = 11 + 9 – 2 = 18 t.05 = -2.88 QUESTION: Identify the following Show the output from the Excel data analysis tool and determine the following: 1. t-computed 2. t critical 3. P-value computed
YPOTHESIS TESTING Lesson : Test of Means Two groups of experimental rats were injected with tranquilizer at 1.0mg dose and at 1.5 mg dose, respectively. The time given in seconds that took them to fall asleep is hereby given in the table below. A B 1 Dosage A Dosage B (1.0 mg) (1.5 mg) 2 9.8 12 3 13.2 7.4 4 11.2 9.8 5 9.5 11.5 6 13 13 7 12.1 12.5 8 9.8 9.8 9 12.3 10.5 10 7.9 13.5 11 10.2 12 9.7 Using the MS Excel, run an independent samples t test at to test the null hypothesis that there is no significant difference brought about by the dosages on the length of time it took for the rats to fall asleep. Hint: Select t-test: Two Samples Assuming Unequal Variances Ho There is no significant difference brought about by the dosages on the length of time it took the rats to fall asleep. H1 There is a significant difference brought about by the dosages on the length of time it took for the rats to fall asleep. Significance level a = 0.1 df = n1 + n2 – 2 = 11 + 9 – 2 = 18 t.05 = -2.88 QUESTION: Identify the following Show the output from the Excel data analysis tool and determine the following: 1. t-computed 2. t critical 3. P-value computed
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Question
HYPOTHESIS TESTING
Lesson : Test of Means
Two groups of experimental rats were injected with tranquilizer at 1.0mg dose and at 1.5 mg dose, respectively. The time given in seconds that took them to fall asleep is hereby given in the table below.
A B
1 Dosage A Dosage B
(1.0 mg) (1.5 mg)
2 9.8 12
3 13.2 7.4
4 11.2 9.8
5 9.5 11.5
6 13 13
7 12.1 12.5
8 9.8 9.8
9 12.3 10.5
10 7.9 13.5
11 10.2
12 9.7
Using the MS Excel, run an independent samples t test at to test the null hypothesis that there is no significant difference brought about by the dosages on the length of time it took for the rats to fall asleep.
Hint: Select t-test: Two Samples Assuming Unequal Variances
Ho
There is no significant difference brought about by the dosages on the length of time it took the rats to fall asleep.
H1
There is a significant difference brought about by the dosages on the length of time it took for the rats to fall asleep.
Significance level
a = 0.1
df = n1 + n2 – 2
= 11 + 9 – 2
= 18
t.05 = -2.88
QUESTION: Identify the following
Show the output from the Excel data analysis tool and determine the following:
1. t-computed
2. t critical
3. P-value computed
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