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

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. Use the histogram to answer the question. The blood pressure readings were given to the nearest whole number. Given that 200 people were aged between 25 and 40, approximately how many had a systolic blood pressure reading between 140 and 149 inclusive? OA. 16 O B. 1.6 OC. 8 O D. 160 0.35 0.3 0.25 0.2 0.15 0.1 g 0.0 100 110 120 130 140 150 160

Explanation / Answer

Clearly, from the histogram, the relative frequency of the range 140-149 is 0.08

Total number of people surveyed are 200

So, the number of people in this range are 200*0.08 = 16

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