How can I set up a t-test that tests whether one sample is larger than another in R? -


I got two sets of measurements of air particles in two places (24 samples taken per hour) I know How will it know if the tools are the same (they are not), but I have been tasked to test that the particle is more than concentration (building1_air) more than (building2_air). This is my first time with R software (or for any thing) that the T-test command (if it is the correct word) should be compared with two samples? I am grateful for any help. 

  t.test (building1_error, building2_ar, optional = "live")   
 Because your optional hyphen is not the default (which is a two test test)

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