Question

you flip a coin. what is p(not tails)? write your answer as a fraction or whole number.

Explanation:

Step1: Determine the total number of outcomes

When flipping a coin, there are 2 possible outcomes: heads or tails. So, the total number of outcomes \( n(S)=2 \).

Step2: Determine the number of favorable outcomes

\( P(\text{not tails}) \) means the probability of getting heads. The number of favorable outcomes (getting heads) \( n(A) = 1 \).

Step3: Calculate the probability

The probability formula is \( P(A)=\frac{n(A)}{n(S)} \). Substituting the values, we get \( P(\text{not tails})=\frac{1}{2} \).

Answer:

\(\frac{1}{2}\)