What are the observational units? There are several research questions we will ask in this investigation. The
Question:
What are the observational units?
There are several research questions we will ask in this investigation. The first one is: On average, is there a significant difference in the E. coli counts between the water that has just been filtered and water that is sitting in the bottom of a filter after it was filtered the previous day? The data set we will use contains results from 14 water filters each giving E. coli counts (per 100 mL) on the first day and the second day after the water was filtered.
Step by Step Answer:
The obs...View the full answer
Introduction To Statistical Investigations
ISBN: 9781118172148
1st Edition
Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy
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For this experiment take the bottle halves. Place the bottle upside down in another half of the bottle. Take a piece of cotton and put the cotton in the bottle first. Then pour sand into it. After adding sand pour fine activated charcoal. You can see the making of Homemade ACTIVATED CHARCOAL in the previous video. I’ll give you the link to the video in the description. After making a 1/2 Inch layer of charcoal put 1 inch of gravel layer and then put 2 inches of pebble layer. Repeat the layer-making process in the same manner once again. After this pour dirty water on the top of the bottle. The water we get at the end is free of impurities.
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