Question

a golf ball is selected at random from a golf bag. if the golf bag contains 9 type a balls, 7 type b balls, and 4 type c balls, find the probability that the golf ball is not a type a ball.
the probability that the golf ball is not a type a ball is . (type an integer or decimal rounded to three decimal places as needed.)

Explanation:

Step1: Calculate total number of balls

$9 + 7+4=20$

Step2: Calculate number of non - type A balls

$7 + 4 = 11$

Step3: Calculate probability

The probability $P$ that the ball is not a type A ball is $\frac{\text{Number of non - type A balls}}{\text{Total number of balls}}=\frac{11}{20}=0.550$

Answer:

$0.550$