Question: The International Organization for Standardization, ISO, published a standardized method for brewing tea to optimise taste. A study of the Irish adult population explored tea

The International Organization for Standardization, ISO, published a standardized method for brewing tea to optimise taste. A study of the Irish adult population explored tea drinking and brewing habits. In order to estimate the true average brewing time for the Irish population, a sample of 200 adults were asked for how long, in minutes, they leave a cup of tea to brew, a summary of the responses is as follows:

n 200 Minimum 0 Maximum 10 Mean 1.9 and Std. Deviation 2.21

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