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Mathematics, 11.01.2020 01:31 noriega16
Which of these statements are true if you need to make an inference about the mean of a population?
i. you must use a t test rather than a z-test unless you know the population standard deviation.
ii. if you do not know the population standard deviation, your sample must be a simple random sample from a normal population.
iii. sample sizes must be at least 30.
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Which of these statements are true if you need to make an inference about the mean of a population?...
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