Which of the Following Is True About a 95% Confidence

question 10

Multiple Choice

Which of the following is true about a 95% confidence interval of the mean for a sample of grocery shoppers rating their favourite store?

• A) 95 out of 100 sample means will fall within the limits of the confidence interval.
• B) There is a 95% chance that the population mean will fall within the limits of the confidence interval.
• C) 95 out of 100 population means will fall within the limits of the confidence interval.
• D) There is a .05 probability that the population mean falls within the limits of the confidence interval

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Definitions:

Bar Charts

Graphical representations using bars of varying lengths to show comparisons among categories.

Causes

Factors or conditions that directly bring about an effect or change in another variable or event.

Crosstabulation

A method of tabulating data that allows for the comparison of two or more variables by creating a matrix that displays their interaction.

Categorical Variables

Variables that represent types or categories that data can fall into; they can be nominal (no specific order) or ordinal (with some order or ranking).