A. 1/3, 1/3
B. From the way you posted it, no difference.
It would help if you would proofread your work before you post it.
C. (1/3)^4
Erik is performing a marble experiment in math class. His teacher places an equal number of black, red, and white marbles in a bag. Then, Erik randomly takes out a marble, records the result, and puts the marble back in the bag. Each of the first four times Erik takes out a marble, he gets a black marble.
A. What is the theoretical probability of Erik picking a black marble next time? Based on Erik's results, what is the experimental probability of Erik picking a black marble next time?
B. Explain the difference between the two probabilities you found in part A.
C. What is the theoretical probability and likelihood of getting four black marbles in a row?
Make sure to show all your work.
2 answers
A1/2-
P(black)=1/3
there's three colors and black is just one of them so you put 1 first then /3 because the denominator is going to be the amount of colors so that would be three so the answer is 1/3
A2/2-
we can assume that it will be the same as before p(black)=1/3. The reason its because there a three colors, and we know that black is one of the three colors, so therefore the answer is 1/3.
B-
the difference between the two provability's is zero(I'm assuming that by difference you mean to subtract). 1/3=0.333333333333
so 0.333333333333-0.333333333333=0
C- The theoretical probability of getting four black marbles in a row is 1/3*4 or 0.333333333333*4 which equals 4/3 or 1.33333333333
P(black)=1/3
there's three colors and black is just one of them so you put 1 first then /3 because the denominator is going to be the amount of colors so that would be three so the answer is 1/3
A2/2-
we can assume that it will be the same as before p(black)=1/3. The reason its because there a three colors, and we know that black is one of the three colors, so therefore the answer is 1/3.
B-
the difference between the two provability's is zero(I'm assuming that by difference you mean to subtract). 1/3=0.333333333333
so 0.333333333333-0.333333333333=0
C- The theoretical probability of getting four black marbles in a row is 1/3*4 or 0.333333333333*4 which equals 4/3 or 1.33333333333
2 answers