Question

A box contains six red pens, four blue pens, eight green pens, and some black pens. Leslie picks a pen and returns it to the box each time. The outcomes are recorded in the table.a. what is the experimental probability of drawing a green pen?b. if the theoretical probability of drawing a black pen is 1/10, how many black pens are in the box

Answer 1

given the follwing parameters,

number of times a Red Pen is picked is 8

numbr o f times the Blue Pen is picked is 5

Number of times the Green Pen is picked is 14

Number of times the Black Pen is picked is 3

so,

(a) to get the experimental probability of drawing a Green Pen is,

P = favoured results/all obtained

then,

14/(8+5+14+3)

= 14/30 that is a

(