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Mathematics, 16.10.2021 20:00, mrashrafkotkaat
A survey of bookstores showed that the average number magazines carried is 57, with a standard deviation of 12. The same bookstore survey showed that the average length of time each store had been in business was 8 years with a standard deviation of 2.5. Which is more variable?
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Answers: 2
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Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?
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