In Order to Construct a 90% Confidence Interval for the Population

question 6

Multiple Choice

In order to construct a 90% confidence interval for the population mean when the population standard deviation is unknown and the sample size is 18, you should use the t-value indicated as:

• A) t_0.10,18
• B) t_0.10,17
• C) t_0.05,18
• D) t_0.05,17
• E) t_0.90,17

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