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Imagine We Took a Group of Smokers, Recorded the Number

question 1

Multiple Choice

Imagine we took a group of smokers, recorded the number of cigarettes they smoked each day, whether they wanted to quit smoking or not, and then split them randomly into one of two 6-week interventions; 'hypnosis' or 'nicotine patch'. After the 6 weeks, we again recorded how many cigarettes they smoked each day and subtracted this number from the number of cigarettes they each smoked pre-intervention, to produce an intervention success score for each participant. Out of the following options, which would be the best method of looking at which intervention was the most successful, taking into account whether the participant wanted to quit or not?

Definitions:

Maximum Profit

The highest potential financial gain that can be achieved from an investment or business venture.

Candlestick Chart

A chart, like a stock chart, but with a top line that indicates the high price, and a low line that indicates the low price for a given period; the rectangular region, known as the real body, is displayed in two different colors; the green candlestick indicates that the closing price is greater than the opening price and the red candlestick indicates the closing price is less than the opening price.

Real Body

In candlestick charting in finance, the wide part of a candle, showing the difference between the opening and closing prices.

Stock Closed

The final price at which a stock is traded on a given trading day.