Question

quiz: quiz unit 4 - statistics
suppose that the spinner shown is spun once. find the probability of the event that the result of a spin is a, b, c, or d
the probability is
(simplify your answer.)

Explanation:

Step1: Identify total outcomes

The spinner is divided into 4 equal - sized sections. So the total number of possible outcomes when the spinner is spun once is $n = 4$.

Step2: Identify favorable outcomes

The event is that the result of a spin is A, B, C, or D. Since all 4 sections are labeled A, B, C, D respectively, the number of favorable outcomes $m=4$.

Step3: Calculate probability

The probability formula is $P=\frac{m}{n}$. Substituting $m = 4$ and $n = 4$ into the formula, we get $P=\frac{4}{4}=1$.

Answer:

1