Two newly discovered trees, X and Y, are thought to belong to the same species. Leaf measurements
Question:
Two newly discovered trees, X and Y, are thought to belong to the same species. Leaf measurements are made on each tree and the estimators tabulated.
a. Calculate a pooled estimate for the population variance.
b. Find the 90% confidence interval for the difference in the means of the leaf lengths.
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a To calculate a pooled estimate for the population variance we need to combine the variances from e...View the full answer
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Related Book For 
Cambridge International AS & A Level Further Mathematics Coursebook
ISBN: 9781108403375
1st Edition
Authors: Lee Mckelvey, Martin Crozier
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