Question

Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in millimeters of mercury (mmHg), for a sample of 10 adults. The following table presents the results. Use a TI-84 calculator to answer the following. Systolic Diastolic Systolic Diastolic 134 87 118 88 115 83 130 76 113 77 116 70 123 77 133 91 119 69 112 75 Based on results published in the Journal of Human Hypertension Part 1 of 4 Compute the least-squares regression line for predicting the diastolic pressure from the systolic pressure. Round the slope and y-intercept to at least four decimal places. Regression line equation: ? = Part 2 of 4 Is it possible to interpret the y-intercept? Explain. (Choose one), the x-values are all (Choose one). Part 3 of 4 If the systolic pressures of two patients differ by 5 millimeters, by how much would you predict their diastolic pressures to differ? Round the answer to three decimal places. Their diastolic pressures would differ by millimeters. Part 4 of 4 Predict the diastolic pressure for a patient whose systolic pressure is 142 millimeters. Round the answer to one decimal place. The diastolic pressure is predicted to be millimeters.

Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure,
which is the maximum pressure taken when the heart is contracting, and the diastolic pressure,
which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were
measured, in millimeters of mercury (mmHg), for a sample of 10 adults. The following table presents
the results. Use a TI-84 calculator to answer the following.

Systolic Diastolic Systolic Diastolic
134 87 118 88
115 83 130 76
113 77 116 70
123 77 133 91
119 69 112 75

Based on results published in the Journal of Human Hypertension

Part 1 of 4
Compute the least-squares regression line for predicting the diastolic pressure from the systolic
pressure. Round the slope and y-intercept to at least four decimal places.
Regression line equation: ? =

Part 2 of 4
Is it possible to interpret the y-intercept? Explain.
(Choose one), the x-values are all (Choose one).

Part 3 of 4
If the systolic pressures of two patients differ by 5 millimeters, by how much would you predict
their diastolic pressures to differ? Round the answer to three decimal places.
Their diastolic pressures would differ by millimeters.

Part 4 of 4
Predict the diastolic pressure for a patient whose systolic pressure is 142 millimeters. Round the
answer to one decimal place.
The diastolic pressure is predicted to be millimeters.

Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure,
which is the maximum pressure taken when the heart is contracting, and the diastolic pressure,
which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were
measured, in millimeters of mercury (mmHg), for a sample of 10 adults. The following table presents
the results. Use a TI-84 calculator to answer the following.

Systolic Diastolic Systolic Diastolic
134 87 118 88
115 83 130 76
113 77 116 70
123 77 133 91
119 69 112 75

Based on results published in the Journal of Human Hypertension

Part 1 of 4
Compute the least-squares regression line for predicting the diastolic pressure from the systolic
pressure. Round the slope and y-intercept to at least four decimal places.
Regression line equation: ? =

Part 2 of 4
Is it possible to interpret the y-intercept? Explain.
(Choose one), the x-values are all (Choose one).

Part 3 of 4
If the systolic pressures of two patients differ by 5 millimeters, by how much would you predict
their diastolic pressures to differ? Round the answer to three decimal places.
Their diastolic pressures would differ by millimeters.

Part 4 of 4
Predict the diastolic pressure for a patient whose systolic pressure is 142 millimeters. Round the
answer to one decimal place.
The diastolic pressure is predicted to be millimeters.

Added by Susan D.

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