PLEASE DO NOT GIVE AN EXPLANATION - JUST ANSWER THE QUESTION. I WILL THUMBS UP.

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A study was conducted in order to examine the relationship between income level and drinking habits. Each of 355 volunteers, all ofwhom were drinkers. was classied into one of three income groups: low income, middle income, and high income. They were then asked whether theyr were light, moderate or heavy drinkers. The data gathered is summarized in the table below: Low Income Middle High Total Income Income Light 43 22 51 116 drinker Moderate 23 21 92 141 drinker Heavy 22 drinker The proportion of the low income earners who were heavy drinkers is .[Write your answer correct to 4 decimal places]