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A tree researcher wishes to test the claim made by a colleague that trees of a...

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Statistics

A tree researcher wishes to test the claim made by a colleaguethat trees of a certain species in a forest to the north are thesame height as the same species in a forest to the south. Theresearcher collected samples from both forests. In the northernforest, the sample size was 9 trees, the sample average was 32.7ft, and the sample standard deviation was 6.9 ft. In the southernforest, the sample size was 12 trees, the sample average was 35.4ft, and the sample standard deviation was 5.6 ft. With alpha = 0.1,test the claim.

Answer & Explanation Solved by verified expert
3.9 Ratings (659 Votes)
The provided sample means are shown belowAlso the provided sample standard deviations areand the sample sizes aren19 andn2121 Null and Alternative HypothesesThe following null and alternative hypotheses need to betestedHo Ha This corresponds to a twotailed test for which a ttest    See Answer
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