To find the expected probability of randomly selecting a black marble from the bag in one attempt, we need to divide the number of times the black marble was selected by the total number of times a marble was selected. In this case, the black marble was selected 9 times out of a total of 36 selections.
So, the expected probability of randomly selecting a black marble in one attempt is 9/36 = 0.25 or 25%.
Therefore, the answer is C) 0.25 or 25%.
he 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 0.9
1 answer
1 answer