• Question 19 The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 19.6 for a sample of size 640 and...

Extracted text: • Question 19 <> The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 19.6 for a sample of size 640 and standard deviation 21.5. Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 90% 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.="" question="" help:="" message="" instructor="" e="" calculator="" submit="">