Respuesta :
Answer: There are 4 possibilities. They are all listed below with their percents.
You can create a tree diagram to shows all of the possibilities. It will start with 2 branches and then each of those branches will have 2 branches.
The possibilities are:Â UU, UD, DU, DD
To find the probabilities of each, you have to multiply the percent for each together.
UU = 0.66 x 0.66 = 0.4356
UD = 0.66 x 0.34 = 0.2244
DU = 0.34 x 0.66 = 0.2244
DD = 0.34 x 0.34 = 0.1156
You can create a tree diagram to shows all of the possibilities. It will start with 2 branches and then each of those branches will have 2 branches.
The possibilities are:Â UU, UD, DU, DD
To find the probabilities of each, you have to multiply the percent for each together.
UU = 0.66 x 0.66 = 0.4356
UD = 0.66 x 0.34 = 0.2244
DU = 0.34 x 0.66 = 0.2244
DD = 0.34 x 0.34 = 0.1156
Answer:
The total number of possible ways are: {(U,U), (U,D), (D,U), (D,D)}
The required table is shown below:
             UU      UD      DU     DD
Probability   0.4356  0.2244  0.2244  0.1156
Step-by-step explanation:
Consider the provided information.
When a certain type of thumbtack is​ flipped, the probability of its landing tip up​ (U) is 0.66 and the probability of its landing tip down​ (D) is 0.34.
Part (A) We need to make a list of all the possible arrangements using U for up and D for down.
Let both thumbtack landing tip up​ (U) = (U,U)
Let one thumbtack landing tip up​ and landing tip of second is down = (U,D), (D,U)
Let both thumbtack landing tip down (D) = (D,D)
Hence, the total number of possible ways are: {(U,U), (U,D), (D,U), (D,D)}
Thus, there are 4 possible ways.
Part (B) Find the probabilities of each possible outcome.
It is given that landing tip up​ (U) is 0.66 and the probability of its landing tip down​ (D) is 0.34.
Probability of (U,U) is = 0.66×0.66=0.4356
Probability of (U,D) is = 0.66×0.34=0.2244
Probability of (D,U) is = 0.34×0.66=0.2244
Probability of (D,D) is = 0.34×0.34=0.1156
The required table is shown below:
             UU      UD      DU     DD
Probability   0.4356  0.2244  0.2244  0.1156