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 119 mm Hg inclusive?

 Systolic Blood Pressure for People Aged 25-40 Years

Answer 1

Answer :

35%

Explanation:

For the bar corresponding to x values between 110-120, the bar's height as indicated by y-axis = Relative Frequency is 0.35. So, the percentage of people aged between 25 - 40 who had a systolic blood pressure reading between 110 and 119 inclusive is 35%.

Answer 2

Answer 3

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