Question

Liz flips a coin 70 times. The coin lands heads up 49 times and tails up 21 times. Complete each statement.
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Part 1
The theoretical probability of the coin landing heads up is
  
50​%.
​(Type an integer or a​ decimal.)
Part 2
Based on​ Liz's results, the experimental probability of the coin landing heads up is
  
enter your response here​%.
​(Type an integer or a​ decimal.)

Answer 1

Part 1: The theoretical probability of the coin landing heads up is **50%**.

Part 2: To find the experimental probability of the coin landing heads up based on Liz's results, use the formula:

\[
\text{Experimental Probability} = \frac{\text{Number of Heads}}{\text{Total Number of Flips}}
\]

In this case, Liz flipped the coin 70 times and got heads 49 times:

\[
\text{Experimental Probability} = \frac{49}{70}
\]

Calculating this gives:

\[
\text{Experimental Probability} = 0.7
\]

To convert this to a percentage, multiply by 100:

\[
0.7 \times 100 = 70\%
\]

So, the experimental probability of the coin landing heads up is **70%**.