Mathematics, 13.10.2020 16:01 cece4874
A finance magazine did a survey and found that the average American family spends $1,600 on a summer vacation. If the distribution is normal with standard deviation $411, find the amount a family would have spent to be the 80th percentile.
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A finance magazine did a survey and found that the average American family spends $1,600 on a summer...
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