Random sampling means that members of a 'population' have equal chances of being selected. To carry out this type of sampling, you will need to use a table of random numbers.
This is when you lose weight, gain weight, then lose weight, then gain more weight than you had before!! It can go on for a very long time. Many obese people suffer from this.
Answer: Larger groups may find it easier to improve their collective skills at tasks such as making fishing nets. ... Through laboratory experiments, they showed that complex cultural traditions — from making fishing nets to tying knots — last longer and improve faster at the hands of larger, more sociable groups.
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U should go see ur doctor first if it’s been 8 months that’s to long and there my be another issue/problem with ur knee