The T-Score Formula. The t-score is a fraction. The numerator is the sample's mean minus mean of the group you are comparing the sample to, and the denominator is the sample's standard deviation divided by the square root of the sample size.
If you have smoked marijuana then the drug will stay for 3 to 30 days. This is normal for the common drugs. But in the case of marijuana, this can be detected even after a month in Urine drug test marijuana. Marijuana will stay in your system for 10 days if you have been smoking occasionally.
Hi Jared. How long marijuana will remain in your system depends on how often or how much marijuana youâve been smoking. Other regular smokers have scored positive on the drug tests even after 45 days since last use, while some heavy smokers had marijuana show up on their tests results 90 days after quitting.hether or not one hit of marijuana will show up on a drug test depends on how quickly your body metabolizes THC, as well as how soon after your use the test is. If itâs a next-day drug screen, or even 2-3 days afterwardsâ¦the cannabis may be detected in a urinalysis.