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Important instructions: For all situations requiring a hypothesis test (z test, one-sample t test, one-sample variance test o
5. *(15 points) You are comparing the months-of-survival of elm trees infected with a virus. Group A has had infected branche
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Solution la Here we have two independent Samples. so we need to use the t-test for 2 erdependent Samples. 2 The null & altern

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