Twelve blocks are prepared so 4 are red, 4 are whitè, and 4 are blue. Help?
To ask about the sample space, you should first describe the experiment: that you are going to pick exactly one of the blocks. Then the sample space is the list of possible outcomes: {red, white, blue} The probability of picking a red block is equal to the number of red blocks divided by the total number of blocks: 4/12 = 1/3. Since the first selection is put back (a very important point) the probability of drawing a red block stays the same, 1/3, so the probability of NOT drawing a red block is 1-1/3 = 2/3. The probability of drawing a green block is zero, as there are no green blocks to draw.
Twelve blocks are prepared, 4 are red, 4 are white, and 4 are blue. What is the sample space?
12 blocks is sample space 4/12 = 1/3 is 2nd answer