A Scientist Was Interested in the Success of a Newly

question 5

Multiple Choice

A scientist was interested in the success of a newly developed sleep aid called 'Night Owl' on time taken to fall asleep and quality of sleep.She recruited 30 participants who were randomly allocated to receive either a dose of Night Owl or a placebo.The scientist measured the mean time taken for each participant to fall asleep (minutes) and the quality of their sleep (measured on a scale of 1 (poorest quality) to 10 (best possible quality) ) over the course of one week. What does the output below show?

• A)The assumption of equality of covariance matrices has been violated.
• B)The assumption of sphericity has been met.
• C)The covariance matrices are not significantly equal.
• D)The covariance matrices are roughly equal as assumed.

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Definitions:

Product Life Cycle

The stages a product goes through from its introduction to the market until its decline and eventual withdrawal.