The article Pine Needles as Sensors of Atmospheric Pollution (Environ. Monitoring, 1982: 273-286) reported on the use
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Let µ1* be the true average log concentration at the first site, and define µ2* analogously for the second site.
a. Use the pooled t test (based on assuming normality and equal standard deviations) to decide at significance level .05 whether the two concentration distribution means are equal.
b. If Ï1* and s2* (the standard deviations of the two log concentration distributions) are not equal, would µ1 and µ2 (the means of the concentration distributions) be the same if µ1* = µ2*? Explain your reasoning.
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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Probability And Statistics For Engineering And The Sciences
ISBN: 9781305251809
9th Edition
Authors: Jay L. Devore
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