Answer: They must be randomly chosen, meaning that each member of the larger population has an equal chance of being chosen. They must be large enough so as not to skew the results. The optimal size of the sample group depends on the precise degree of confidence required for making an inference. Simple random sampling is the basic sampling technique where we select a group of subjects (a sample) for study from a larger group (a population). Each individual is chosen entirely by chance and each member of the population has an equal chance of being included in the sample.
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False. Martin Luther King's Speech "I Have A Dream" was about his hopes for the equality in the American and African American Society. He was dreaming of a world where segregation is non-existent and all human beings are co-existing in society, functioning as equals.
If a solution has equal hydronium and hydroxide ions, the solution is considered neutral. A neutral pH is 7.
