The table shows the results of randomly selecting colored marbles from a bag 36 times. The marble was returned to the bag after each selection.
White Red Black Blue
Number of
Times
Selected 8 14 9 5
Based on these results, what is the expected probability of randomly selecting a black marble from the bag in one attempt?
Responses
A 0.1390.139
B 0.220.22
C 0.250.25
D 0.90.9
The expected probability of randomly selecting a black marble from the bag is calculated by taking the number of times black marbles were selected (9) and dividing it by the total number of selections (36).
Probability = Number of black marbles selected / Total selections
Probability = 9 / 36
Probability = 0.25
Therefore, the expected probability of randomly selecting a black marble from the bag in one attempt is 0.25.
The correct answer is C) 0.25.