Question

6E2. A market survey is given to 1000 people. One of the questions concerns whether the person recognises brand name X. Roughly 60% of people respond “yes” though this varies to some extent over time; one of the purposes of the survey is to monitor this. How many of the 1000 people would you expect to recognize brand X? Your answer should not be a single number! Based on your answer to (a), how uncertain and unreliable is the proportion of people who recognize brand X? If a particular survey gave the result of 62% recognition and then a month later the proportion had dropped to 57%, would you be convinced that brand recognition is really decreasing?

Answer 1

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