Given
The number of times the coin was flipped = 20 times
The number of times tails showed up = 9 times
Mathematically, the formula for the experimental probability is defined by:
[tex]Probability\text{ of an event P\lparen E\rparen = }\frac{Number\text{ of times an event occurs}}{Total\text{ number of trials}}[/tex]Based on the experiment, the probability of flipping a coin and getting tails can be found using the formula above.
Applying the formula:
[tex]P(flipping\text{ a coin and getting tails\rparen = }\frac{9}{20}[/tex]Answer: 9/20