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Which of the following is not appropriate to use the t-confidence interval for μ

a) The variable has a Normal distribution

b) The population standard deviation, ơ, is known.

c) The sample size is greater than 30.

d) The sample is based on a simple random sample (SRS).

e) All of the above are appropriate.

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Karol A.
Karol A.Lv10
6 Mar 2021
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