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13.08.2020 •
Mathematics
5. During a national debate on changes to health care, a cable news service performs an opinion poll of 500 small business owners. It shows that 65% of small-business owners do not approve of health care changes. Develop a 95% confidence interval for the proportion opposing health care changes. Use 4 decimal places.
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Ответ:
The 95% confidence interval for the proportion opposing health care changes is (0.6082, 0.6918).
Step-by-step explanation:
The (1 - α)% confidence interval for the population proportion is:
The information provided is:
The critical value of z for 95% confidence level is:
*Use a z-table.
Compute the 95% confidence interval for the proportion opposing health care changes as follows:
Thus, the 95% confidence interval for the proportion opposing health care changes is (0.6082, 0.6918).
Ответ: