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4. Before an increase in exeise duty on tea, 800 people out of a sample of 1000 were consumersof tea. After the increase in duty, 800 people were consumers of tea in a sample of 1200persons. Find whether there is significant decrease in the consumption of tea after the increasein duty​

Answer»

ANSWER:

yes there is significant DECREASE in the CONSUMPTION of tea after increase in duty

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