A Study Was Done to Investigate the Effect of 'Motivation

question 13

Multiple Choice

A study was done to investigate the effect of 'motivation to quit' on the success rate of a new intervention developed to reduce the number of cigarettes smoked per day in a group of smokers.Looking at the graph below,what can we say about the relationship between motivation to quit and the success rate of the intervention?

• A)Whether a person wanted to quit smoking had no effect on the success of the smoking intervention.
• B)There were the same number of people who wanted to quit smoking as who didn't.
• C)We can't say anything about the success of the intervention because the graph does not take into account the number of cigarettes smoked per day pre-intervention.
• D)The medians were the same in people who wanted to quit smoking and those that didn't.

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