Sony Would Like to Test the Hypothesis That the Average

question 16

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. The 95% confidence interval for the difference in population means is ______.

• A)(-1.70, 4.70)
• B)(1.18, 1.82)
• C)(0.65, 2.35)
• D)(- 0.11, 3.11)

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Definitions:

Behavioural Tolerance

Through the principles of classical conditioning, cues in the environment can become conditioned stimuli to the effects of drug use. These cues cause the individual to anticipate the drug effects so that when the drug is actually administered the effects are diminished. Tolerance, or the need for a greater amount of drug for the same effect, is greatest when the conditioned environmental cues are present.

Severely Impaired

A condition in which an individual experiences significant barriers or limitations in physical or mental functioning.

Markers of Vulnerability

Indicators or signs that a person or population may be more susceptible to harm or adverse conditions due to various factors.