The Owner of a Large Car Dealership Believes That the Financial

question 51

Multiple Choice

The owner of a large car dealership believes that the financial crisis decreased the number of customers visiting her dealership. The dealership has historically had 800 customers per day. The owner takes a sample of 100 days and finds the average number of customers visiting the dealership per day was 750. Assume that the population standard deviation is 350. The value of the test statistic is ________.

• A) z = -1.429
• B) t₉₉ = -1.429
• C) z = 1.429
• D) t₉₉ = 1.429

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Definitions:

Absolute Value

A measure of a number's distance from zero, regardless of direction on the number line, represented by \(|x|\).

Set Notation

A symbolic way of representing and specifying a set and its elements using curly brackets and specific symbols.

Absolute Value Inequality

An inequality that contains an absolute value expression, setting constraints on the range of solutions.

Absolute Value Inequality

A mathematical statement that expresses the range of values an absolute value expression can take and still satisfy a given inequality.