An article reports the following values for soil heat flux of eight plots covered with coal dust. 37.3 36.8 37.3 32.1 33.4 26.5 18.1 24.8 The mean soil heat flux for plots covered only with grass is 29.0. Assuming that the heat-flux distribution is approximately normal, does the data suggest that the coal dust is effective in increasing the mean heat flux over that for grass? Test the appropriate hypotheses using α = 0.05. Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.) t = P-value
An article reports the following values for soil heat flux of eight plots covered with coal dust. 37.3 36.8 37.3 32.1 33.4 26.5 18.1 24.8 The mean soil heat flux for plots covered only with grass is 29.0. Assuming that the heat-flux distribution is approximately normal, does the data suggest that the coal dust is effective in increasing the mean heat flux over that for grass? Test the appropriate hypotheses using α = 0.05. Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.) t = P-value
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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An article reports the following values for soil heat flux of eight plots covered with coal dust.
37.3 | 36.8 | 37.3 | 32.1 | 33.4 | 26.5 | 18.1 | 24.8 |
The
Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.)
t | = | |
P-value |
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