The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systo
lic blood pressure is 81.6 for a sample of size 441 and standard deviation 9.2. Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 98% 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).
