In 2003, an organization surveyed 1,508 adult americans and asked about a certain war, "do you believe the united states made the right or wrong decision to use military force? " of the 1,508 adult americans surveyed, 1,085 stated the united states made the right decision. in 2008, the organization asked the same question of 1,508 adult americans and found that 570 believed the united states made the right decision.
1. construct and interpret a 90% confidence interval for the difference between the two population proportions, p 2003 - p 2008.

The confidence interval for the difference of proportions of the population p2003-p2008 is .

Step-by-step explanation:

In this question we have to construct a 90% confidence interval (CI) for a difference of proportions.

The proportion for 2003 is .

The proportion for 2008 is .

The difference in proportions is .

The standard deviation of the difference of proportions can be estimated as:

For a 90% CI, the z-value is 1.64.

Then we can construct the CI as

step-by-step explanation:

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step-by-step explanation:

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