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29 November, 09:06

1,200 employees of a company were surveyed to find out whether they were satisfied with the company's insurance policy. The survey showed that 80% of the respondents were not satisfied with the policy.

The standard error of the proportion is %. The number of people who are satisfied with the policy is between % and %.

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  1. 29 November, 09:57
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    Standard err: + / - 1.15%.% people satisfied is between 18.85% and 21.15%
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