Charlie flipped a coin 80 times and got heads 25 times. What is the theoretical and experimental probability of getting tails?

The correct option is C $0.5,\frac{11}{16}$
When a coin is flipped, we obtain either heads (H) or tails (T).
Total number of possible outcomes = 2
Total number of outcomes of getting tails = 1

$\text{Theoretical probability of getting tails}=\frac{\text{number of outcomes of getting tails}}{\text{total number number of possible outcomes}}=\frac{1}{2}=0.5$

Given, when Charlie flipped the coin, heads was the outcome 25 times out of 80 times.

Number of times tails was the outcome when Charlie flipped a coin 80 times = 80 − 25 = 55
Let P(T) denote the experimental probability of obtaining tails when a coin is flipped.

$P\left(T\right)=\frac{\text{number of favourable outcomes}}{\text{number of total outcomes}}$

$P\left(T\right)=\frac{\text{number of times tail obtained}}{\text{number of times the coins is flipped}}$

$P\left(T\right)=\frac{55}{80}=\frac{11\times 5}{16\times 5}$

$P\left(T\right)=\frac{11}{16}$

The experimental probability of getting tails when Charlie flipped a coin 80 times is $\frac{11}{16}$.