Consider the hypothesis test Ho : o7 = o, against H1 : o > o. Suppose that the sample sizes are nį = 20 and n2 = 8, and that s = 4.8; s; = 2.5. Use a = 0.01. (a) Test the hypothesis. Round your answers to two decimal places (e.g. 98.76). The test statistic is fo 1.92 The critical value isf 6.18 Conclusion: fail to reject the null hypothesis at a = 0.01. (b) Construct the confidence interval on o /o, which can be used to test the hypothesis: (Round your answer to two decimal places (e.g. 98.76).) 7.23 VI

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Consider the hypothesis test Ho : o = 0, against H1 : o > o. Suppose that the sample sizes are n1 = 20 and n2 = 8, and that
s = 4.8; s, = 2.5. Use a = 0.01.
(a) Test the hypothesis.
Round your answers to two decimal places (e.g. 98.76).
The test statistic is fo
1.92
The critical value is f :
6.18
Conclusion:
fail to reject
the null hypothesis at a = 0.01.
(b) Construct the confidence interval on o /o, which can be used to test the hypothesis:
(Round your answer to two decimal places (e.g. 98.76).)
i
7.23
VI
Transcribed Image Text:Consider the hypothesis test Ho : o = 0, against H1 : o > o. Suppose that the sample sizes are n1 = 20 and n2 = 8, and that s = 4.8; s, = 2.5. Use a = 0.01. (a) Test the hypothesis. Round your answers to two decimal places (e.g. 98.76). The test statistic is fo 1.92 The critical value is f : 6.18 Conclusion: fail to reject the null hypothesis at a = 0.01. (b) Construct the confidence interval on o /o, which can be used to test the hypothesis: (Round your answer to two decimal places (e.g. 98.76).) i 7.23 VI
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