Question

camp no camp total swimming lessons 42 32 74 no swimming lessons 18 4 22 total 60 36 96 which is the joint relative frequency for school children who plan to attend camp and have swimming lessons? round the answer to the nearest percent. 4% 19% 33% 44%

Explanation:

Step1: Recall joint - relative frequency formula

Joint relative frequency = $\frac{\text{Frequency of the joint category}}{\text{Total frequency}}$

Step2: Identify relevant frequencies

The frequency of school children who plan to attend camp and have swimming lessons is 42. The total frequency of all children is 96.

Step3: Calculate joint - relative frequency

Joint relative frequency = $\frac{42}{96}= 0.4375$

Step4: Convert to percentage and round

$0.4375\times100\% = 43.75\%\approx44\%$

Answer:

44%