Correct. Probability governs the behavior of all of these. Because random samples are selected by means of a random digits table (or computer software), the sampled individuals are chosen according to a probability distribution. Because the sample statistics are computed from that random sample, the statistics are themselves random variables that obey the laws of probability. Most simple random processes (think of flipping a coin or throwing a die) also behave according to the laws of probability. When you have absolutely no idea what might happen, there is chaos, which is not governed by the laws of probability.
Incorrect. Probability governs the behavior of all of these. Because random samples are selected by means of a random digits table (or computer software), the sampled individuals are chosen according to a probability distribution. Because the sample statistics are computed from that random sample, the statistics are themselves random variables that obey the laws of probability. Most simple random processes (think of flipping a coin or throwing a die) also behave according to the laws of probability. When you have absolutely no idea what might happen, there is chaos, which is not governed by the laws of probability.
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Try again.