Suppose Apple Would Like to Test the Hypothesis That the Standard

question 22

Multiple Choice

Suppose Apple would like to test the hypothesis that the standard deviation for the web-browsing battery life of the iPad equals 3.0 hours.The following data represents the battery life,in hours,experienced by a random sample of six users: 10 14 12 16 10 6.
Which of the following would be the correct hypothesis test?

• A) H₀:σ² ≤ 3.0,H_A:σ² > 3.0
• B) H₀:σ = 3.0,H_A:σ ≠ 3.0
• C) H₀:σ² ≥ 9.0,H_A:σ² < 9.0
• D) H₀:σ² = 9.0,H_A:σ² ≠ 9.0

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Definitions:

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A psychological mechanism that protects an individual from distressing or threatening information by filtering or altering their perception of reality.

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Weber's Law

A principle in psychology that states the smallest change in a stimulus that can be detected is a constant proportion of the original stimulus's intensity.

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The process by which organisms adjust and change to their environment for survival and reproduction.