The article Orchard Floor Management Utilizing Soil-Applied Coal Dust for Frost
Chapter 8, Problem 70(choose chapter or problem)
The article Orchard Floor Management Utilizing Soil-Applied Coal Dust for Frost Protection (Agri. and ForestMeteorology, 1988: 7182) reports the following values forsoil heat flux of eight plots covered with coal dust.34.7 35.4 34.7 37.7 32.5 28.0 18.4 24.9The mean soil heat flux for plots covered only with grass is29.0. Assuming that the heat-flux distribution is approximatelynormal, does the data suggest that the coal dust iseffective in increasing the mean heat flux over that forgrass? Test the appropriate hypotheses using .
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