Essay
To determine whether a new drug designed to lower a person's heart rate is effective or not, Dr.Johnson gives the medicine to a random sample of 100 patients with Rapid Heart Rhythm RHR) and obtains a sample mean of 128.Dr.Johnson knows the heart rate of the population of individuals with RHR is 135 with .If Dr.Johnson uses a one-tailed test and α = .05, what is the appropriate conclusion?
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