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7. Suppose that Juan wants to calculate a 96% confidence interval for a population mean from a sample of size n = 15. What is
7. Suppose that Juan wants to calculate a 96% confidence interval for a population mean from
a sample of size n = 15. What is the appropriate critical value t* ?
(a) 2.145
(b) 2.249
(c) 2.264
(d) 2.054
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