Problem 2: In a survey of 640 U.S. adults, 200 participants said they were taking vitamin E as a supplement. - Identify the sample size n, the number of successes x, and p and q for the sample. - Follow the steps from the lecture notes and homework to construct the 90% confidence interval for the population proportion using a, z-score and EBP. Write the conclusion using complete sentences. - Use the calculator to construct the confidence interval for the population proportion, if the confidence level will be 94%, and all other values stay the same. zpq EBP2 -Use the formula n = to find the minimum number of participants, if you want to be 98% confident that the estimated sample proportion is within ten percent of the true population proportion.