The null and alternate hypotheses are: He: ₁ = ₂ H₂=₁ #₂ A random sample of 10 observations from one population revealed a sample mean of 23 and a sample standard deviation of 4. A random sample of 8 observations from another population revealed a sample mean of 26 and a sample standard deviation of 5. 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 HO ift< ort>

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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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
Transcribed Image Text: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
The null and alternate hypotheses are:
He: H₁=₂
H₁ H₂ H₂
A random sample of 10 observations from one population revealed a sample mean of 23 and a sample standard deviation of 4. A
random sample of 8 observations from another population revealed a sample mean of 26 and a sample standard deviation of 5.
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 HO ift<
ort>
Transcribed Image Text:The null and alternate hypotheses are: He: H₁=₂ H₁ H₂ H₂ A random sample of 10 observations from one population revealed a sample mean of 23 and a sample standard deviation of 4. A random sample of 8 observations from another population revealed a sample mean of 26 and a sample standard deviation of 5. 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 HO ift< ort>
Expert Solution
Step 1: determine the given variable

n subscript 1 equals 10
n subscript 2 equals 8
stack x subscript 1 with bar on top equals 23
stack x subscript 2 with bar on top equals 26
s subscript 1 equals 4
s subscript 2 equals 5

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