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The data manager for a state political party gathered data to determine how many citizens...

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The data manager for a state political party gathered data to determine how many citizens would support the party's senate candidate. He polled citizens in 30 similarly sized senate districts and found a sample mean of 70,438 citizens. Statewide data shows that the population standard deviation is 645.3. What is the approximate 90% confidence interval for this situation?70,134 and 70,74270,403 and 70,47370,244 and 70,63270,207 and 70,669

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