Prada buys a designer phone case for $300. The phone case is a collector's item and
1 answer:
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Answer:
P(X=3) = 0.2013
Step-by-step explanation:
After taking and tagging the first 20 birds, then we have a proportion of 20% of tagged birds within the population, that is
Supposing that the probability (0.20) of capturing a bird <em>remains constant</em>, we may resolve it as it follows:
Capturing 10 birds can be considered as a binomial experiment with a success probability p = 0.2
Let, be the expression of the binomial distribution, for our case we have:
p=0.2
x = 3
n=10
Then,
Therefore, the probability that exactly 3 of the 10 birds in the new sample were previously tagged is 20.13%
The answer is 067.
It takes an even number of steps for the object to reach (2,2), so the number of steps the object may have taken is either 4 or 6 .
If the object took 4 steps, then it must have gone two steps and two steps E, in some permutation. There are
ways for these four steps of occuring, and the probability is
.
If the object took 6 steps, then it must have gone two steps N and two steps E, and an additional pair of moves that would cancel out, either N / S or W/E. The sequences N, N, N, E, E, S can be permuted in ways. However, if the first four steps of the sequence are N, N, E, E in some permutation, it would have already reached the point (2,2) in four moves. There are
ways to order those four steps and
ways to determine the order of the remaining two steps, for a total of 12 sequences that we have to exclude. This gives
sequences of steps. There are the same number of sequences for the steps N, N, E, E, E, W, so the probability here is
.
The total probability is , and
.
What is probability?
- Probability is synonymous with possibility. It is a mathematical discipline that deals with the occurrence of a random event. The value ranges from zero to one.
- Probability has been introduced in mathematics to predict the likelihood of occurrences occurring. Probability is defined as the degree to which something is likely to occur.
- This is the fundamental probability theory, which is also utilized in probability distribution, in which you will learn about the possible results of a random experiment.
- To determine the likelihood of a particular event occurring, we must first determine the total number of alternative possibilities.
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