Mathematics, 11.12.2019 01:31 pulliamdylan

The times that customers spend in a book store are normally distributed with a mean of 39.5 minutes and a standard deviation of 15.9 minutes. a random sample of 30 customers has a mean of 36.1 minutes or less. would this outcome be considered unusual, so that the store should reconsider its displays? group of answer choices

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