A random sample of 8 observations from one population revealed a sample mean of 23 and a sample standard deviation of 3.8. A random sample of 9 observations from another population revealed a sample me of 27 and a sample standard deviation of 3.8. At the 0.05 significance level, is there a difference between the population means? a. State the decision rule. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) The decision rule is to reject H0 if t< ort> b. Compute the pooled estimate of the population variance. (Round your answer to 3 decimal places.) Pooled estimate of the population variance c. Compute the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The decision rule is to reject HO if t <
A random sample of 8 observations from one population revealed a sample mean of 23 and a sample standard deviation of 3.8. A random sample of 9 observations from another population revealed a sample mea
of 27 and a sample standard deviation of 3.8.
At the 0.05 significance level, is there a difference between the population means?
a. State the decision rule. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.)
b. Compute the pooled estimate of the population variance. (Round your answer to 3 decimal places.)
Pooled estimate of the population variance
c. Compute the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)
Test statistic
ort>
57
ADO
15
tv
MacBook Air
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B
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Paused
W
Update
9
Transcribed Image Text:The decision rule is to reject HO if t < A random sample of 8 observations from one population revealed a sample mean of 23 and a sample standard deviation of 3.8. A random sample of 9 observations from another population revealed a sample mea of 27 and a sample standard deviation of 3.8. At the 0.05 significance level, is there a difference between the population means? a. State the decision rule. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) b. Compute the pooled estimate of the population variance. (Round your answer to 3 decimal places.) Pooled estimate of the population variance c. Compute the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.) Test statistic ort> 57 ADO 15 tv MacBook Air A B O Paused W Update 9
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