A study was completed in California. In northern California, the study involved 1,000 patients; 74% of them experienced flu like symptoms during the month of December. The study had a margin of error of 3.2%. What does that mean for the study?


The confidence interval is between 12.1% and 236.8%.


The confidence interval is between 70.8% and 77.2%.


The confidence interval is between 67.6% and 80.4%.


The confidence interval is between 71% and 77%.

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Answer:

Second thesis

Step-by-step explanation:

The confidence interval is between (74%-3.2%) and (74%+3.2%)

If the study had a margin of error of 3.2%. What does that mean for the study is: The confidence interval is between 70.8% and 77.2%.

Confidence interval

Sample proportion of people with flu like symptoms=74%

Margin of error=3.2%

Hence:

Confidence interval=(F-Margin or error) and (F+Margin or error)

Confidence interval= (74%-3.2%) and (74%+3.2%)

Confidence interval=70.8% and 77.2%

Therefore the confidence interval is between 70.8% and 77.2%.

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