The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 38.6 for a sample of size 449 and standard deviation 11.6. 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). Answer should be obtained without any preliminary rounding.

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A: Given:  NT=21T2-80T+24 , 4<T<34 Tt=6t+1.8T

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A: The mean is 64,271 and the standard deviation is 17,329.

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