random assignment
By hand.
In observational studies, the independent variable (or exposure) is the variable that cannot be controlled by the researcher. This variable is already present and its impact is observed without any intervention or manipulation by the researcher.
no
Picked and sorted by hand --> hand-picked and sorted by a simple machine --> picked and sorted by complex machinery
Arthur's hand picked warriors were called the Knights of the Round Table. They were the elite soldiers of their time and often fought on horseback.
William Taft
their never was a demi week only hand picked Hannah week and wand picked wizard week right now hand picked Hannah weeked just ended SORRY!
I believe what you're referring to is a double blind study. Where neither the researcher or the subjects know who has the placebo and who does not.
i picked left
Most is still picked by hand. All fruits are picked by hand with people on ladders reaching for the fruit in the trees or hand picking strawberries, mushrooms, onions, lettuce ( in the lettuce fields they bring up big trailers and they pick and box it right in the field) grapes are still by hand and laid out on paper if they are to be raisins. After the raisins are dried they are rolled in the paper and picked up by hand. Corn is picked by machine and so it cotton. Some nuts are also done by machine. Tomatoes are by hand and put on big trailers and taken to the processing plant. Squished tomatoes are all over the roads in tomato season.
confounded
by hand, I think they wore gloves, but I'm not certain.