A nurse measured the blood pressure of each person who visited her clinic. Follo

Question

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 139 mm Hg inclusive? Systolic Blood Pressure for People Aged 25-40 Years Histogram for Systolic Blood Pressure Click the icon to view the histogram for systolic blood pressure OA, 59% B. 89% C. 75% D. 39% Relative Frequency 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 Click to select your answer 100 110 120 130 140 150 160 Svstolic Blood Pressure (mm Ha)

Explanation / Answer

The percentage of people aged 25-40 had a systolic blood pressure reading between 110 and 139mm Hg inclusive is

= (0.35+0.25+0.15)*100 = 0.75*100 = 75%

Answer: Option C) 75%

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