TWO MEANS A researcher wishes to determine whether people with high blood pressure can reduce their...

TWO MEANS

A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Use the sample data below to test the claim that those who followed the diet have a lower mean blood pressure than those who did not followed the diet.

Followed the diet: n1 = 85, x ̅_1 = 189.1 s1 = 38.7 Did not follow the diet: n2 = 75, x ̅_2 = 203.7 s2 = 39.2

Hypothesis

Ho:

Ha:

p-value

Conclusion

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

A researcher wishes to determine whether the systolic blood pressure of people who follow a vegetarian...

A researcher wishes to determine whether the systolic blood pressure of people who follow a vegetarian diet is, on average, lower than the systolic blood pressure of those who do not follow a vegetarian diet. Independent simple random samples of 85 vegetarian and 75 nonvegetarians yielded the following sample statistics: Vegetarians Nonvegetarians Mean = 124.1 Mean = 138.7 s1 = 38.7 s2 = 39.2 Use the significance level of 0.01 to test the claim of the researcher.

A researcher wishes to determine whether the blood pressure of vegetarians is, on average, lower than...

A researcher wishes to determine whether the blood pressure of vegetarians is, on average, lower than the blood pressure of nonvegetarians. Independent simple random samples of 85 vegetarians and 75 nonvegetarians yielded the following sample statistics for systolic blood pressure: Vegetarians n1= 85 = 124.1 mmHg s1 = 38.7 mmHg Nonvegetarians n2 = 75 = 138.7 mmHg s2 = 39.2 mmHg Use a significance level of 0.01 and P-value method to test the claim that the mean systolic blood pressure...

To determine whether high blood pressure affected whether a person had a stroke, a sample of...

To determine whether high blood pressure affected whether a person had a stroke, a sample of 121 people who had had strokes are examined. In the sample, 40% had high blood pressure. If we were to test the hypothesis that at least 33% of the people who have had strokes have had high blood pressure (using the 10% level of signficance) what is the critical value? (please round your answer to 2 decimal places)

A researcher conducted a study to whether age, gender, obesity, high blood pressure and regular physical...

A researcher conducted a study to whether age, gender, obesity, high blood pressure and regular physical activity is associated with the risk of recurrent MI (measured as serum cholesterol level) in post MI patients. A sample of 60 people was obtained from the community. All subjects had their serum cholesterol level drawn. Research question: Do age, gender, obesity, high blood pressure and regular physical activity predict the serum cholesterol level? Please indicate which statistical test should be used. a. Independent...

what is high blood pressure? who is affected? what can we do about high blood pressure?...

what is high blood pressure? who is affected? what can we do about high blood pressure? what can be done to have a healthy life and can it be cured? change from high blood pressure to diabetes

Dentists make many people nervous. To see whether such nervousness elevates blood pressure, the blood pressure...

Dentists make many people nervous. To see whether such nervousness elevates blood pressure, the blood pressure and pulse rates of 60 subjects were measured in a dental setting and in a medical setting. For each subject, the difference (dental-setting blood pressure minus medical-setting blood pressure) was calculated. The analogous differences were also calculated for pulse rates. Summary data are given below. Mean Difference Standard Deviation of Differences Systolic Blood Pressure 4.43 8.77 Pulse (beats/min) −1.30 8.84 (a) Do the data...

Dentists make many people nervous. To see whether such nervousness elevates blood pressure, the blood pressure...

Dentists make many people nervous. To see whether such nervousness elevates blood pressure, the blood pressure and pulse rates of 60 subjects were measured in a dental setting and in a medical setting. For each subject, the difference (dental-setting blood pressure minus medical-setting blood pressure) was calculated. The analogous differences were also calculated for pulse rates. Summary data are given below. Mean Difference Standard Deviation of Differences Systolic Blood Pressure 4.49 8.77 Pulse (beats/min) −1.33 8.84 (a) Do the data...

A medical researcher wishes to try three different techniques to lower the blood pressure of patients...

A medical researcher wishes to try three different techniques to lower the blood pressure of patients with high blood pressure. The subjects are randomly selected and assigned to one of three groups. Group 1 is given medication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of six weeks, each subject's blood pressure is recorded group1 group 2 group 3 13 8 6 12 6 4 11 4 3 15 7...

A medical researcher wishes to try three different techniques to lower blood pressure of patients with...

A medical researcher wishes to try three different techniques to lower blood pressure of patients with high blood pressure. The subjects are randomly selected and assigned to one of three groups. Group 1 is given medication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of six weeks, each subject's blood pressure is recorded, with data as shown below. The reasearcher will use this data to test the claim that there...

A medical researcher wishes to try three different techniques to lower the blood pressure of patients...

A medical researcher wishes to try three different techniques to lower the blood pressure of patients with high blood pressure. The subjects are randomly selected and assigned to one of three groups. Group 1 is given medication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of six weeks, each subject's blood pressure is recorded. Find the test statistic F to test the claim that there is no difference between the...

Subjects