Question
In a survey of 2307 adults in a recentyear, 1340 say they have made a NewYear's resolution. Construct90% and95% confidence intervals for the population proportion.
In a survey of 2307 adults in a recentyear, 1340 say they have made a NewYear's resolution.
Construct90% and95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals.
The90% confidence interval for the population proportion p is? (Round to three decimal places asneeded.)
The95% confidence interval for the population proportion p is? (Round to three decimal places asneeded.)
With the givenconfidence, it can be said that the sample proportion or population proportion
of adults who say they have made a NewYear's resolution is
not between the endpoints
greater than the lower endpoint
less than the upper endpoint
between the endpoints
of the given confidence interval.
Compare the widths of the confidence intervals. Choose the correct answer below.
A.
The90% confidence interval is wider.
B.
The95% confidence interval is wider.
C.
The confidence intervals cannot be compared.
D.
The confidence intervals are the same width.
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