AT&T Would Like to Test the Hypothesis That the Proportion

question 18

Multiple Choice

AT&T would like to test the hypothesis that the proportion of 18- to 34- year- old Americans that own a cell phone is less than the proportion of 35- to 49- year- old Americans. A random sample of 200 18- to 34- year- old Americans found that 126 owned a smartphone. A random sample of 175 35- to 49- year- old Americans found that 119 owned a smartphone. If Population 1 is defined as 18- to 34- year- old Americans and Population 2 is defined as 35- to 49- year- old Americans, the correct hypothesis statement for this hypothesis test would be ______

• A)H₀: p1 - p2 c 0; H₁: p1 - p2 > 0
• B)H₀: p1 - p2 c 0; H₁: p1 - p2 < 0
• C)H₀: p1 - p2 = 0; H₁: p1 - p2 × 0
• D)H₀: p1 - p2 < 0; H₁: p1 - p2 c 0

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Definitions:

Ratings

Evaluations or assessments of the quality, performance, or popularity of products, services, or content, often influencing consumer choices and perceptions.

Gig Economy

A labor market characterized by the prevalence of short-term contracts or freelance work as opposed to permanent jobs, emphasizing flexibility for both employers and workers.

Tax-free Purchases

Transactions exempt from sales tax, often related to purchases made in duty-free shops or certain goods in specific regions or situations.

High Tech

Industries and companies that are involved in developing and producing advanced technology products and services, especially in fields like electronics, software, and biotechnology.