In a sample of 400 registered voters, 204 were Democrats.
a.Provide a 95% confidence interval for the proportion of registered Democrats in the population.b.There are 169 million registered voters in the US. Determine an interval for the number(how many) of registered Democrats in the population.
What will be an ideal response?
| a. | .461 to .559 (rounded) |
| b. | 77,909,000 to 94,471,000 (rounded) |
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