From a Population That Is Normally Distributed with an Unknown $\mu$

question 16

Multiple Choice

From a population that is normally distributed with an unknown standard deviation, a sample of 25 elements is selected. For the interval estimation of $\mu$ , the proper distribution to use is the

• A)standard normal distribution
• B)z distribution
• C)t distribution with 26 degrees of freedom
• D)t distribution with 24 degrees of freedom

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