From a Population That Is Normally Distributed with an Unknown

question 35

Multiple Choice

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

• A)t distribution with 24 degrees of freedom
• B)t distribution with 26 degrees of freedom
• C)normal distribution
• D)standard normal distribution
• E)none of the above

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Definitions:

Regression Analysis

A statistical method for estimating the relationships among variables, typically one dependent variable and one or more independent variables.

Categorical Data

Data that can be sorted into categories based on qualitative properties or attributes, such as names or labels.

Numerical Data

Information that can be measured or counted and represented in numbers and values.

Multicollinearity

A statistical phenomenon in which two or more independent variables in a regression model are highly correlated, potentially distorting the results.