Question

act prep
the blood types of 150 people were determined for a study as shown in the figure below.
if 1 person from this study is randomly selected, what is the probability that this person has either type a or type ab blood?
a. $\frac{62}{150}$
b. $\frac{66}{150}$
c. $\frac{68}{150}$
d. $\frac{73}{150}$
e. $\frac{84}{150}$

Explanation:

Step1: Identify counts for Type A and AB

From the bar graph, number of people with Type A blood is 67, and with Type AB is 6.

Step2: Calculate total for A or AB

Add the counts: \( 67 + 6 = 73 \).

Step3: Find probability

Total people is 150, so probability is \( \frac{73}{150} \).

Answer:

D. \(\frac{73}{150}\)