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 149 people who had had strokes are examined. In the sample, 63% had high blood pressure. Determine the LOWER bound of the 95% confidence interval for the proportion of people who had a stroke that had high blood pressure. (please express your answer AS A DECIMAL using 4 decimal places)
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To determine whether high blood pressure affected whether a
person had a stroke, a sample of...
QUESTION 5 tim To determine whether high blood pressure affected whether a person had a stroke,...
QUESTION 5 tim To determine whether high blood pressure affected whether a person had a stroke, a sample of 128 people who had had strokes are examined. In the sample, 68% had high blood pressure. Determine the LOWER bound of the 95% confidence interval for the proportion of people who had a stroke that had high blood pressure. (please express your answer AS A DECIMAL using 4 decimal places)
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 147 people who had had strokes are examined. In the sample, 35% had high blood pressure. If we were to test the hypothesis at the 10% level of significance that at least 31% of the people who have had strokes have had high blood pressure, what is the test statistic? (please round your answer to 2 decimal places)
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 125 people who had had strokes are examined. In the sample, 36% 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)
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.4. A sample of 37 U.S. adults i...
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.4. A sample of 37 U.S. adults is chosen. Use the TI-84 Calculator as needed. Round the answer to four decimal places. Part 1 Is it appropriate to use the normal approximation to find the probability that more than 45% of the people in the sample have high blood pressure? It is and...
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and...
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.3. A sample of 32 U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places. ol. Part 1 of 5 Is it appropriate to use the normal approximation to find the probability that more than 44% of the people in the sample have...
QUESTION 13 5 points In a sample of 90 grocery store customers. it is found that...
QUESTION 13 5 points In a sample of 90 grocery store customers. it is found that 63% of them were buying 15 items or fewer. Determine the upper bound of the 95% confidence interval for the proportion of customers that buy 15 items or fewer? (please express your answer AS A DECIMAL using 4 decimal places) QUESTION 14 5 points Historically, the proportion of students entering a university who finished in 4 years or less was 60%. To test whether...
To study whether the students at a university are satisfied with the food service, a sample...
To study whether the students at a university are satisfied with the food service, a sample of 185 students revealed that 63% of them said they were satisfied with the food service. Develop the LOWER bound of the 99% confidence interval for the proportion of students who are satisfied with the food service. (please express your answer AS A DECIMAL using 4 decimal places)
The mean diastolic blood pressure for a random sample of 70 people was 90 millimeters of...
The mean diastolic blood pressure for a random sample of 70 people was 90 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 10 millimeters of mercury, find a 95% confidence interval for the true mean diastolic blood pressure of all people. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) What is the...
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and...
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.3. A sample of 32 U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places. al. Part 1 of 5 Is it appropriate to use the normal approximation to find the probability that more than 44% of the people in the sample have...
The blood pressure of a person changes throughout the day. Suppose the systolic blood pressure of...
The blood pressure of a person changes throughout the day. Suppose the systolic blood pressure of a person is measured 16 times over several days and the standard deviation of these measurements for the person is known to be σ=7.9 mmHg. Let μ be the true average blood pressure for that person and let x¯=127 be the average of the 16 measurements. (a) Find a two-sided 94% confidence interval for μ. One can be 94% confident that the true average...
QUESTION 5 tim To determine whether high blood pressure affected whether a person had a stroke, a sample of 128 people who had had strokes are examined. In the sample, 68% had high blood pressure. Determine the LOWER bound of the 95% confidence interval for the proportion of people who had a stroke that had high blood pressure. (please express your answer AS A DECIMAL using 4 decimal places)
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.4. A sample of 37 U.S. adults is chosen. Use the TI-84 Calculator as needed. Round the answer to four decimal places. Part 1 Is it appropriate to use the normal approximation to find the probability that more than 45% of the people in the sample have high blood pressure? It is and...
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.3. A sample of 32 U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places. ol. Part 1 of 5 Is it appropriate to use the normal approximation to find the probability that more than 44% of the people in the sample have...
QUESTION 13 5 points In a sample of 90 grocery store customers. it is found that 63% of them were buying 15 items or fewer. Determine the upper bound of the 95% confidence interval for the proportion of customers that buy 15 items or fewer? (please express your answer AS A DECIMAL using 4 decimal places) QUESTION 14 5 points Historically, the proportion of students entering a university who finished in 4 years or less was 60%. To test whether...
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.3. A sample of 32 U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places. al. Part 1 of 5 Is it appropriate to use the normal approximation to find the probability that more than 44% of the people in the sample have...
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