Mathematics, 21.04.2020 19:29 stephenandvicki
You’ve been hired to design a survey to estimate the amount a guest intends to spend during a visit to the Elmhurst College Casino and Hookah Lounge. Given that guest expenditures are normally distributed, how large a sample do you need to be 95% confident that the error is no more than $5.00? Past data estimates the standard deviation to be $20.
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