Anurse measured the blood pressure of each person who visited her clinic. Follow

Question

Anurse 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. 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? 035 0.30 025 020 0.15 0.10 005 0.00 Relative Frequency 100 110 120 130 140 150 160 Systolic Blood Pressre (nn Hg OA, 39% OB, 75% C. 59% OD, 89%

Explanation / Answer

Percentage of people with systolic Blood pressure reading between 110 and 139 = 0.35+0.25+0.15 =0.75 or 75%

We take the second,third and fourth bar respectively.

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