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19-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 165 (µ = 165). The 30 individuals who take Atenolol have an average systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure?
The most appropriate alternative hypothesis (in words) would be:
A- There is no significant difference in systolic blood pressure when comparing people who take Atenolol to the general population of people who do not take Atenolol.
B-There is a significant difference in systolic blood pressure when comparing people who take Atenolol to the general population of people who do not take Atenolol.
C-People taking Atenolol will not experience a significantly lower systolic blood pressure when compared to the general population of people who do not take Atenolol.
D-People taking Atenolol will experience a significantly lower systolic blood pressure when compared to the general population of people who do not take Atenolol.
20-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 165 (µ = 165). The 30 individuals who take Atenolol have an average systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure?
The most appropriate alternative hypothesis (in symbols) would be:
A-µAtenolol = 165
B-µAtenolol = 147
C-µAtenolol < 165
D-µAtenolol < 147
21-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 165 (µ = 165). The 30 individuals who take Atenolol have an average systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Set alpha equal to .01.

Set up the criteria for making a decision. That is, find the critical value using an alpha = .01. (Make sure you are sign specific: + ; – ; or +/-) (Use your tables)
A- +/- 2.457
B – 2.462
C – 2.750
D +/- 2.756
22-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 165 (µ = 165). The 33 individuals who take Atenolol have an average systolic blood pressure of 147, with a sample standard deviation of 8.14. 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!)
What is the numeric value of your standard error?
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