akaumbulu
26.03.2020 •
Mathematics
The article"Occurrence and Distribution of Ammonium in Iowa Groundwater" (K. Schilling, Water Environment Research, 2002:177–186) describes measurements of ammonium concentrations (in mg/L) at a large number of wells in the state of Iowa. These included 349 alluvial wells and 143 quaternary wells. Of the alluvial wells, 182 had concentrations above 0.1, and 112 of the quaternary wells had concentrations above 0.1.
Find a 90% confidence interval for the difference in mean concentrations between alluvial and quaternary wells.
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Ответ:
I'm not the best at graphing but it seems like the slope is -2.
The reason i think this is because where your point is it is in the negatives and it seems to be right over the corner of -2. Even though the point is not directly on the line it does not mean that point is not your slope. Your slope will be -2.