This Question: 10 pts 3 of 20
Consider the normal curve in the figure to the right,
which illustrates the relative frequencies in a
distribution of systolic blood pressures for a sample
of female students. The distribution has a standard
deviation of 15
1
ܪܽ
60
75 90 105 120 135 150
Blood pressure
b. Estimate the percentage of students whose blood pressure is less than 90. Choose the correct answer below.
O A. 84%
I
OB
16%
O C. 47%
OD 100%