Forty women between the ages of 30 and 44 were enrolled in a study to evaluate the relationship between cigarette smokin

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Forty women between the ages of 30 and 44 were enrolled in a study to evaluate the relationship between cigarette smoking and systolic blood pressure. The researcher created a frequency table with 6 classes and width of 20. Use the frequency table below to answer the following three questions.
Systolic Blood Pressure of Women
Frequency
80-99
9
100-119
24
120-139
5
140-159
1
160-179
0
180-199
1