Sony Would Like to Test the Hypothesis That the Average

question 32

Multiple Choice

Sony would like to test the hypothesis that the average age of a PlayStation user is different from the average age of an Xbox user. A random sample of 36 PlayStation users had an average age of 34.2 years while a random sample of 30 Xbox users had an average age of 32.7 years. Assume that the population standard deviation for the age of PlayStation and Xbox users is 3.9 and 4.0 years, respectively. Sony would like to set α = 0.10. Which one of the following statements is true?

• A)Because the 90% confidence interval does not include zero, we fail to reject the null hypothesis and can conclude that the average age of PlayStation users is different from the average age of Xbox users.
• B)Because the 90% confidence interval does not include zero, we reject the null hypothesis and can conclude that the average age of PlayStation users is different from the average age of Xbox users.
• C)Because the 90% confidence interval includes zero, we fail to reject the null hypothesis and cannot conclude that the average age of PlayStation users is different from the average age of Xbox users.
• D)Because the 90% confidence interval includes zero, we fail to reject the null hypothesis and conclude that the average age of PlayStation users is equal to the average age of Xbox users.

Understand the concept of exclusions in the context of gross income.

Identify the effects of recent tax legislation on tax filing procedures.

Describe the structure of property taxes and their significance to local government revenue.

Understand how personal financial decisions, like charitable donations, affect individual tax liabilities.

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Definitions:

Internal Referencing Strategy

A method wherein individuals compare their current situation, achievements, or outcomes against their previous performances instead of comparing themselves to others.

Post-only Design

An experimental design where measurements are taken only after the intervention, lacking a baseline measurement for comparison.

Time Series Design

A research design that involves observations of a particular variable or variables over a set period, allowing for the analysis of trends or changes over time.

Training Program

An organized course or set of courses designed to equip participants with specific skills or knowledge.