A 95% confidence interval is constructed in order to estimate the proportion of all adults who are left-handed. The interval ends up being from 0.076 to 0.144. What should we conclude based on this information? If the confidence level had been 90% instead of 95%, the confidence interval would have been wider. 95% of adults are left-handed between 7.6% to 14.4% of the time. The margin of error is less than 0.05. The sample proportion is 0.10. The true population proportion is definitely between 0.076 to 0.144.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A 95% confidence interval is constructed in order to estimate the proportion of all adults who are
left-handed. The interval ends up being from 0.076 to 0.144. What should we conclude based on
this information?
If the confidence level had been 90% instead of 95%, the confidence interval would have been
wider.
95% of adults are left-handed between 7.6% to 14.4% of the time.
The margin of error is less than 0.05.
The sample proportion is 0.10.
The true population proportion is definitely between 0.076 to 0.144.
Transcribed Image Text:A 95% confidence interval is constructed in order to estimate the proportion of all adults who are left-handed. The interval ends up being from 0.076 to 0.144. What should we conclude based on this information? If the confidence level had been 90% instead of 95%, the confidence interval would have been wider. 95% of adults are left-handed between 7.6% to 14.4% of the time. The margin of error is less than 0.05. The sample proportion is 0.10. The true population proportion is definitely between 0.076 to 0.144.
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