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Write a DATA step to create a new data set, Work.Combined,
by concatenating Clinic.Stress98 and
Clinic.Stress99.
For the new data set, select only observations in which the value of
RestHR is lower than 72. Add data set options
to prevent the variables TimeMin and TimeSec from
being read from Clinic.Stress99, and drop the variable
RecHR from the new data set.
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Submit the program and view log messages about the DATA step. Does
Work.Combined contain 8 observations and 8 variables?
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Print Work.Combined and scroll through the output. Do all
observations have values lower than 72 for
RestHR?
Return here and select Next.
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