In a survey of 3005 adults aged 57 through 85 years, it was found that 81.7% of them used at least one prescription medication. What is the lower limit for a 90% confidence level. Round to 3 decimal places. Type your answer.. 1 point In a survey of 3005 adults aged 57 through 85 years, it was found that 81.7% of them used at least one prescription medication. What is the upper limit for a 90% confidence level. Round to 3 decimal places. Type your answer... 1 point Find the sample size needed to estimate the percentage of California residents who are left- handed. Use a margin of error of three percentage points, and use a confidence level of 99%. Assume that we have no point estimate for p. Type your answer... 1 point Find the sample size needed to estimate the percentage of California residents who are left- handed. Use a margin of error of three percentage points and use a confidence level of 99%. Assume that we have a point estimate of the population which tells us 10% of Californians are left-handed. Type your