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For a Sample of Size 20 Taken from a Normally

Question 162

Multiple Choice

For a sample of size 20 taken from a normally distributed population with standard deviation equal to 5, which of the following would be required to construct a 90% confidence interval for the population mean?


A) z = 1.96
B) t = 1.729
C) z = 1.645
D) t = 1.328

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