Question

2. A psychologist is interested in constructing a 99% confidence interval for the proportion of people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain. 64 of the 802 randomly selected people who were surveyed agreed with this theory.

a. With 99% confidence the proportion of all people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain is betweenand .

b. If many groups of 802 randomly selected people are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population proportion of all people who accept the theory that a person's spirit is no more than the complicated network of neurons in the brain and about percent will not contain the true population proportion.

3. Out of 200 people sampled, 84 had kids. Based on this, construct a 99% confidence interval for the true population proportion of people with kids. Answers as decimals, to three places

4. If n=350 and ˆp (p-hat) =0.89, find the margin of error at a 95% confidence level. Round to 4 places.

5. In a recent poll, 520 people were asked if they liked dogs, and 50% said they did. Find the margin of error of this poll, at the 99% confidence level. Give your answer to three decimals

Answer 1