The problem states that Jon's experimental probability of striking out at baseball is 13%. We need to find out how many times Jon will strike out in 30 times at bat.

1. Problem Description

The problem states that Jon's experimental probability of striking out at baseball is 13%. We need to find out how many times Jon will strike out in 30 times at bat.

2. Solution Steps

We are given the probability of striking out as 13%, which can be written as a decimal by dividing by 100:

$13\% = \frac{13}{100} = 0.13$.

To find the number of times Jon will strike out in 30 at-bats, we multiply the probability of striking out by the total number of at-bats:

Number of strikeouts = Probability of striking out $\times$ Number of at-bats

Number of strikeouts $= 0.13 \times 30$

Number of strikeouts $= 3.9$

Since we're looking for an approximate number of times, we round 3.9 to the nearest whole number, which is

4.

3. Final Answer

Jon will strike out about 4 times.