The Average Number of Hours for a Random Sample of Mail

question 59

Multiple Choice

The average number of hours for a random sample of mail order pharmacists from company A was 50.1 hours last year. It is believed that changes to medical insurance have led to a reduction in the average work week. To test the validity of this belief, the hypotheses are

• A)H₀: U > 50.1, H_{a : U < 50.1.}
• B)H₀: U = 50.1, H_{a : U ≠ 50.1.}
• C)​H₀: U ≤ 50.1, H_{a : U > 50.1.}
• D)H₀: U ≥ 50.1, H_{a : U < 50.1.}

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Definitions:

Proportion

Proportion refers to the fraction or percentage of a total that is made up by a specific part or category.

Admission Standards

Criteria or requirements set by institutions or organizations for entry or acceptance, often used in context with schools or universities.

Proportion

A statistical measure that reflects the fraction of the total number of occurrences for a specific outcome.

Hypotheses

Formally proposed explanations for a phenomenon, which are typically tested through research and experiments to be supported or refuted.