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(a) Use the function data.frame to create a data frame called leadstudy that contains all of the information in the table above. Display the results.

(b). Using R commands, display the record (the row of the data table) for the subject with id number 202.

(c) Use R to compute the mean of fulliq for sex==M.

idsex fulliq group 157 M 158 M 161 F 162 F 163F 201 M 202 F 203 M 204 M 206 F 107 lead = 40 93 lead >= 40 85 lead >= 40 75 lead >= 40 80 lead >= 40