A nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40 years. The blood pressure readings were given to the nearest whole number. Approximately what percentage of the people aged 25-40 had a systolic blood pressure reading between 110 and 119 mm Hg inclusive? Systolic Blood Pressure for People Aged 25-40 Years Click the icon to view the histogram for systolic blood pressure. A. 3.5% B. 35% C. 30% D. 0.35% Histogram for Systolic Blood Pressure Relative Frequency 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 100 110 120 130 140 150 160 Systolic Blood Pressure (mm Hg) Print Done
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A nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40. Use the histogram to answer the question. The blood pressure readings were given to the nearest whole number. Relative Frequency Systolic Blood Pressure (mm Hg) Given that 400 people were aged between 25 and 40, approximately how many had a systolic blood pressure reading between 130 and 149 inclusive?
Ameer S.
A nurse measured the blood pressure of each person who visited her clinic. Following is a relative-frequency histogram for the systolic blood pressure readings for those people aged between 25 and 40. Use the histogram to answer the question. The blood pressure readings were given to the nearest whole number. Approximately what percentage of the people aged 25-40 had a systolic blood pressure reading between 110 and 139 inclusive?
Manisha S.
Blood pressure is a way of measuring the amount of force exerted on the walls of blood vessels. It is measured using two numbers: systolic (as the heart beats) blood pressure and diastolic (as the heart rests) blood pressure. Blood pressures vary substantially from person to person, but a typical blood pressure is $120 / 80,$ which means the systolic blood pressure is $120 \mathrm{mm} \mathrm{Hg}$ and the diastolic blood pressure is $80 \mathrm{mm}$ Hg. Assuming that a person's heart beats 70 times per minute, the blood pressure $P$ of an individual after $t$ seconds can be modeled by the function $$P(t)=100+20 \sin \left(\frac{7 \pi}{3} t\right)$$ (a) In the interval $[0,1]$, determine the times at which the blood pressure is $100 \mathrm{mmHg}$. (b) In the interval $[0,1],$ determine the times at which the blood pressure is $120 \mathrm{mmHg}$. (c) In the interval $[0,1],$ determine the times at which the blood pressure is between 100 and $105 \mathrm{mmHg}$.
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