Fighting U.S. Hunger In a poll of 1000 likely voters, 560

Chapter 7, Problem 14

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QUESTION:

Fighting U.S. Hunger In a poll of 1000 likely voters, 560 say that the United States spends too little on fighting hunger at home. Find a 95% confidence interval for the true proportion of voters who feel this way. Source: Alliance to End Hunger. 0.529 _ p _ 0.591

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QUESTION:

Fighting U.S. Hunger In a poll of 1000 likely voters, 560 say that the United States spends too little on fighting hunger at home. Find a 95% confidence interval for the true proportion of voters who feel this way. Source: Alliance to End Hunger. 0.529 _ p _ 0.591

ANSWER:

Step 1 of 2

Given:

The sample proportion is the number of successes divided by the sample size:

For confidence level , determine  using table  (look up 0.025 in the table, the z-score is then the found z-score with opposite sign):

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