Question

A ball was picked at random from a bag of red and black balls 23 times. 13 of the picked balls were red and remaining were black. What are the relative frequencies of picking black balls and red balls respectively?

• A. $\frac{10}{23}$, $\frac{13}{23}$
• B. $\frac{13}{23}$, $\frac{10}{23}$
• C. $\frac{23}{13}$, $\frac{23}{10}$
• D. $\frac{23}{10}$, $\frac{23}{13}$

Answer 1

The correct option is A $\frac{10}{23}$, $\frac{13}{23}$

Number of times red balls were picked $=13$

Number of times black balls were picked $=23-13=10$

Hence, relative frequency of:

$\text{Red balls}=\frac{13}{23}$

$\text{Black balls}=\frac{10}{23}$