Question

An experiment is conducted with a bag of marbles containing 5 white and 2 blue marbles. The results of a marble being drawn twice and replaced 100 times are shown in the table.


Outcome Frequency
White, White 27
White, Blue 22
Blue, Blue 18
Blue, White 33

Find P(1 blue).
33 over 100
50 over 100
55 over 100
73 over 100

Answer 1

To find the probability of drawing 1 blue marble, we need to add the frequencies of outcomes "White, Blue" and "Blue, White" and divide by the total number of experiments.

P(1 blue) = (22 + 33) / 100
P(1 blue) = 55 / 100
P(1 blue) = 0.55

So, the probability of drawing 1 blue marble is 0.55 or 55/100.