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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A sale manager of Febreze, air freshener product would like to compare whether the sale distribution reflects the population in four different locations. According to Australian Bureau of Statistics, 35% of the population lives in Melbourne, 21% in Sydney, 24% in the Canberra, and 20% in Adelaide. Table below presents a breakdown of a sample of 400 orders randomly selected from those shipped last month. What is the critical value at the .01 level of risk?
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