Question: The most important condition for sound conclusions from statistical inference is that (a) the data come from a well-designed random sample or randomized experiment. (b)

The most important condition for sound conclusions from statistical inference is that

(a) the data come from a well-designed random sample or randomized experiment.

(b) the population distribution be exactly Normal.

(c) the data contain no outliers.

(d) the sample size be no more than 10% of the population size.

(e) the sample size be at least 30.

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