SOLUTION: A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hyperte

Question 1156444: A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 144 (µ = 144) with a standard deviation of 19. The 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 149. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!)
Calculate the 95% confidence interval
As you know, two values will be required to complete the following equation:

_________ ≤ µ ≤ __________
For this question, what is the value that is above or greater than µ?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
The half interval is the mean +/- t df=29 0.97*s/sqrt(n)
this is 2.045*19/sqrt(30)=7.1
(141.9, 156.1) mm Hg
156.1 mm Hg is the upper value.
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