Using the information provided in Exercise 1 above how large
Using the information provided in Exercise 1 above, how large a sample size should be taken to estimate the proportion of all Canadian grocery shoppers who are trying to make healthier food choices to within 3%, with 95% confidence? How large a sample would you choose if there was no sample information available about the proportion of Canadian grocery shoppers who are trying to make healthier food choices? Why is it better to have an estimate of the proportion?
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