Question

On May 23, 2013, Gallup reported that of the 1,005 people surveyed, 76% of U.S. workers believe that they will continue working past retirement age. The confidence level for this study was reported at 95% with a ±3% margin of error. (a) Determine the estimated proportion from the sample.

Answer 1

Answer: 0.76

Explanation:

We know that the sample proportion is the best estimate of the population proportion. (1)

Given : Gallup reported that of the 1,005 people surveyed, 76% of U.S. workers believe that they will continue working past retirement age.

Let p be the population proportion.

We have sample proportion:
`\hat{p}=76\%=0.76`

Therefore, the estimated proportion of U.S. workers believe that they will continue working past retirement age from the sample =
`\hat{p}=0.76`