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Mathematics, 23.02.2021 01:00 Maaaryyss
According to official census figures, 12% of couples living together are not married. A researcher took a random sample of 400 couples and found that 11% of them are not married. Test at the 15% significance level if the current percentage of unmarried couples is less than 12%.
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According to official census figures, 12% of couples living together are not married. A researcher t...
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