Assume that a sample is used to estimate a population proportion p. Find the 99.9% confidence interval for a sample of size 386 with 215 successes. Enter your answer as a tri-linear inequality using decimals (not percents) accurate to three decimal places. ___< p <___

The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 68.7 for a sample of size 30 and standard deviation 9.1. Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 98% confidence level). Assume the data is from a normally distributed population.   Enter your answer as a tri-linear inequality accurate to three decimal places.< μμ <

The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 19.8 for a sample of size 642 and standard deviation 9.3.Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 95% confidence level).Enter your answer as a tri-linear inequality accurate to one decimal place (because the sample statistics are reported accurate to one decimal place).___________ < μ < _________Answer should be obtained without any preliminary rounding

We wish to estimate what percent of adult residents in a certain county are parents. Out of 600 adult residents sampled, 426 had kids. Based on this, construct a 95% confidence interval for the proportion p of adult residents who are parents in this county.Express your answer in tri-inequality form. Give your answers as decimals, to three places.____< p < ____Express the same answer using the point estimate and margin of error. Give your answers as decimals, to three places.p = ____±____