A marketing firm claims that its ad campaign will increase sales for a fast-food chain by
15%....
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Mathematics, 08.04.2020 20:45 YbnNahmir
A marketing firm claims that its ad campaign will increase sales for a fast-food chain by
15%. In a random sample of 25 stores, the average increase in sales was 16% with a
standard deviation of 5%.
What is the z value for the this example rounded to the nearest hundredth?
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Answers: 1
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