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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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jprust87 jprust87
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6 years ago
The standard deviation for the lifetimes of washing machines is estimated to be 800 hours. What sample size must be selected in order to be 97 confident that the margin of error will not exceed 50 hours?
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lsellers6lsellers6
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this is exactly what I needed
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