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Hypothesis Testing

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Consider the following Hypothesis Testing:

H0: δ1² = δ2²
Ha: δ1² ≠ δ2²

The sample size for sample 1 is 25, and for sample 2 are 21. The variance for sample 1 is 4.0 and for sample 2 is 8.2

a) at the confidence level of 0.98, what is your conclusion of this test?
b) What is the confidence interval for the ratio of δ1/δ2, of which the Null Hypothesis is True?

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Consider the following Hypothesis Testing:

H0: δ1І = δ2І
Ha: δ1І ≠ δ2І

The sample size for sample 1 is 25, and for sample 2 are 21. The variance for sample 1 is ...

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How to perform an F test and determine confidence intervals?

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