In a sample of 400 registered voters, 204 were Democrats
a. Provide a 95% confidence for the proportion of registered Democrats voters 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.
a. 0.461 to 0.559 (rounded)
b. 77,909,000 to 94, 471,000 (rounded)
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Indicate whether the statement is true or false
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Indicate whether the statement is true or false