A Population Has a Standard Deviation of 50

question 65

Multiple Choice

A population has a standard deviation of 50.A random sample of 100 items from this population is selected.The sample mean is determined to be 600.At 95% confidence, the margin of error is

• A) 8.225.
• B) 8.3.
• C) 9.8.
• D) 9.92.

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Definitions:

Nominal Variable

A nominal variable is a type of categorical data that represents different categories or groups which do not have a natural order or ranking.

Indicator Variables

Indicator Variables, also known as dummy variables, are numeric variables used in statistical models to represent categorical data with two or more categories.

Regression Model

A statistical technique used to analyze and model the relationship between a dependent variable and one or more independent variables.

Logistic Regression

A statistical method used for predicting binary outcomes based on one or more independent variables.