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Use the National Health and Nutrition Examination Survey ( NHANES ) data ( attached is the file ) to examine marijuana use in the United

Use the National Health and Nutrition Examination Survey (NHANES) data
(attached is the file) to examine marijuana use in the United States.
Complete the following tasks to explore whether age is related to marijuana use in
the United States.
1) Open nhanes_2013_ch1.csv.
2) Examine the data types for DUQ200, RIDAGEYR, and RIAGENDR,
and fix data types if needed.
3) Code missing values appropriately for DUQ200, RIDAGEYR, and
RIAGENDR
4) Create a bar chart showing the percentage of NHANES participants
answering yes and no to marijuana use.
5) Recode age into a new variable called age.cat with 4 categories:
1829,3039,4049,5059
6) Create a bar chart of marijuana use by age group
7) Add a prolog and comments to your code
8) Following the R code in your code file, use comments to describe
what you found. Given what you found and the information in the
chapter, what do you predict will happen with marijuana legalization
in the next 10 years? Discuss how the omission of older people from
the marijuana use question for NHANES influenced your
prediction. Write your prediction and discussion in comments at the
end of your code file.

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