Question

subjects taught
english\tnot english\ttotal
math\t34\t22\t56
not math\t40\t8\t48
total\t74\t30\t104
which is the joint relative frequency for teachers who teach math and not english? round the answer to the nearest percent.
8%
21%
33%
38%

Explanation:

Step1: Identify relevant values

From the table, the number of teachers who teach math and not English is 22, and the total number of teachers is 104.

Step2: Calculate joint relative frequency

Divide the relevant count by the total count, then convert to a percentage.
$\text{Joint Relative Frequency} = \frac{22}{104} \times 100\%$

Step3: Compute and round the value

$\frac{22}{104} \times 100\% \approx 21.15\%$, which rounds to 21%.

Answer:

21% (Option B. 21%)