The annual main stem growth, measured for a sample of 17 4-year-old red pine trees
Chapter 8, Problem 8.117(choose chapter or problem)
The annual main stem growth, measured for a sample of 17 4-year-old red pine trees, produced a mean of 11.3 inches and a standard deviation of 3.4 inches. Find a 90% confidence interval for the mean annual main stem growth of a population of 4-year-old red pine trees subjected to similar environmental conditions. Assume that the growth amounts are normally distributed.
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