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Eating paint Eating paint It has been estimated that lead poisoning resulting from an unnatural craving (pica) for substances such as paint may affect as many as
by the Jive Hustlin'-Rock n' Roll-Blues drought of 1977-'04, and was most recently spotted eating paint chips in Tijuana while listening to the Dixie Chicks.) The
a serious eating disorder that can cuase you to need surgery . It can also cuase you to need dental work , phosphors intoxication cuased by the match heads , or environmental
that is characterized by the repeated eating of non-nutritive substances over a period of one month or longer. Patients may eat non-edible objects such as paint,
in?" What happened to the rice crispies I was just eating? The walls are undulating as if there are little colonies of ants underneath the paint. There's a man behind
Submitted by ulasch1 on November 22, 2006
Category: Miscellaneous
Words: 1467 | Pages: 6
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Eating paint
It has been estimated that lead poisoning resulting from an unnatural craving (pica) for substances such as paint may affect as many as a quarter of a million children each year, causing them severe, irreversible retardation. Explanations for why children voluntarily consume lead range from "improper parental supervision" to "a child's need to mouth objects." Some researchers, however, have been investigating whether the habit of eating such substances has a nutritional explanation.
One such study involved a comparison of a regular diet and a calcium-deficient diet on the ingestion of a lead acetate solution on rats. Each rat in a group of 20 was randomly assigned to either an experimental or a control group. Those in the control group received a normal diet, while those in the experimental group received a calcium deficient diet. Each of the rats occupied a separate cage and was monitored to observe the amount of a 0.15% lead-acetate solution consumed during the study period (ml).
Here is the data:
Control: 5.4 6.2 3.1 3.8 6.5 5.8 6.4 4.5 4.9 4.0
Exper : 6.8 7.5 8.6 7.6 5.5 4.9 5.4 4.5 8.5 6.3
Carefully describe how to randomize in this experiment and draw an possible experimental plan, i.e. show which rat is randomized to which trial, which rat is assigned to which cage, etc. You could present a table similar to:
Cage: 1 2 3 4 .....
Rat : 2 10 12 14 .....
Treatment: c e e e .....
Construct side-by-side dot and box plots. What do the graphs seem to indicate?
Find the simple summary statistics for each group. Find a standard error for each mean, and a confidence interval for the mean of each group. Interpret the se's and the confidence intervals.
Estimate the difference in the means and obtain an estimated se for the difference and a confidence...
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