To determine whether a new drug that is supposed 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 that the heart rate of the population of individuals with RHR is 135,with .If Dr.Johnson uses a one-tailed test and
,what is the appropriate conclusion?
A) Fail to reject
.
B) Fail to reject
.
C) Fail to reject
.
D) Reject
and accept
.
Correct Answer:
Verified
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