Question

A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly...

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 sample of 30 individuals who take Atenolol have an average (mean) 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.


The best conclusion for this example

Homework Answers

Answer #1

Solution :

= 165

=147

s = 6

n = 30

This is the two tailed test .

The null and alternative hypothesis is ,

H0 :    = 165

Ha :     165

Test statistic = t

= ( - ) / s / n

= (147-165) /6 / 30

= −16.432

Test statistic = t =−16.432  

P-value = 0

= 0.01

P-value <

0 < 0.01

Reject the null hypothesis .

There is sufficient evidence to suggest that  

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly...
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 148 (µ = 148) with a standard deviation of 14.  The 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 148. On the basis of these data, can the researcher conclude that the...
A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly...
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 174 (µ = 174) with a standard deviation of 16.  The 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 155. On the basis of these data, can the researcher conclude that the...
A researcher wants to determine whether high school students who attend an SAT preparation course score...
A researcher wants to determine whether high school students who attend an SAT preparation course score significantly different on the SAT than students who do not attend the preparation course. For those who do not attend the course, the population mean is 1050 (? = 1050). The 16 students who attend the preparation course average 1150 on the SAT, with a sample standard deviation of 300. On the basis of these data, can the researcher conclude that the preparation course...
Research Scenario Hypertension is defined as a systolic blood pressure (SBP) of 140 mmHg or more,...
Research Scenario Hypertension is defined as a systolic blood pressure (SBP) of 140 mmHg or more, or a diastolic blood pressure (DBP) of 90 mmHg or more. Diastolic blood pressure (DBP) measurements from the general population form a normal distribution with m = 82 mmHg and s = 10 mmHg. Epidemiological studies have shown that obesity increases the risk of hypertension (high DBP). Using data from a cohort study, a researcher obtained a sample of n = 144 obese persons...
Question 2 (18 marks) Hypertension (high blood pressure) is a common health problem amongst the Australian...
Question 2 Hypertension (high blood pressure) is a common health problem amongst the Australian population. It is the greatest contributor to the burden of cardiovascular disease (CVD). According to Australian Heart Foundation data, 25% Australians of aged between 45-54 years suffer from hypertension. To investigate how Australians are affected by the incidence of hypertension, a researcher selected a random sample of 12 Australians of the above age group. Use this information to answer the following questions: (a) Suggest an appropriate...
A medical researcher is investigating the effect of drinking coffee on systolic blood pressure. The researcher...
A medical researcher is investigating the effect of drinking coffee on systolic blood pressure. The researcher assumes the average systolic blood pressure is 120 mmHg. For a random sample of 200 patients, the researcher takes two measurements of systolic blood pressure. The first systolic blood pressure measurement is taken during a week when the patients drink no coffee, and the second systolic blood pressure measurement is taken during a week when the patients drink at least two cups of coffee....
More and more companies in Halifax are trying to enter the lucrative health care products area....
More and more companies in Halifax are trying to enter the lucrative health care products area. Sunray makes a variety of health care appliances for use in the home. One product is a digital blood pressure gauge that can be operated by a patient at home without the aid of a health care professional. Obviously, accuracy of the gauges is important to home users. However, many complaints have been received regarding the accuracy of these gauges. The Canadian Medical Association...
Question 6 An investigator is looking at the relationship between periodontal disease and the onset of...
Question 6 An investigator is looking at the relationship between periodontal disease and the onset of hypertension. Suppose the investigator decides to look at height as a variable that may confound the relationship between exposure and case status in his study. After collecting information about the height of each participant, he assembles a database that approximates height with the normal distribution. A) Assuming the mean of the distribution is 176.2 cm with a standard deviation of 17.5 cm, what are...