An urn includes white and black balls. if a random sample of length is chosen, the probability that it consists of exactly white balls: 
Sample area = M + N
we are choosing r balls from the pattern space
So the possibility of having the exactly white ball is ok which means the okay of decided on balls is black
So the probability is
Probability is honestly how probable something is to manifest. each time we are unsure about the final results of an event, we will talk about the probabilities of certain results—how in all likelihood they're. The analysis of activities governed via probability is referred to as information.
Probability is the branch of mathematics concerning numerical descriptions of ways in all likelihood an occasion is to occur, or how in all likelihood it's miles that a proposition is proper. The opportunity of an occasion is more than a few between zero and 1, in which, more or less talking, 0 suggests the impossibility of the occasion and 1 shows reality.
Probability = the number of methods of achieving achievement. the full number of feasible effects. for instance, the possibility of flipping a coin and it being heads is ½, due to the fact there may be 1 manner of getting a head and the whole wide variety of viable consequences is two (a head or tail).
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The answer is shaping. Shaping is normally used to train
animals, such as dogs, to perform difficult tasks; it is also a useful learning
tool for modifying behavior of human. It is a method of training by which
successive estimates toward a target behavior are protected—to test his
theories of behavioral psychology.
Answer:
The most likely cause of this disease is that siblings have a variable expression of this disease.
Explanation:
Neurofibromatosis 1 is an autosomal dominant disorder, even though it is a very rare disease to occur. This dominant nature causes this disease to be expressed even in people who have heterozygous alleles for it, which makes it easier for siblings to have this disorder, since only those who are hom0zygous recessive would not present it. However, the expressiveness of the disease may vary between siblings, as is the case shown above, where although the two siblings have the same disease, they present it in different ways.
Answer: A. Expressing rage over the terrible plight of drug addicts to demonstrate her intense commitment to change
Explanation: What will certainly not increase credibility with the audience is expressing rage. While it may seem that expressing rage and anger is good for showing commitment to a problem, a desire for change, and that Amy cares about reducing the suffering of drug addicts, rage shows that there is a lack of composure with Amy, and composure is key when one wants to gain credibility, because anger can point to certain shortcomings of anyone who wants credibility at all costs.
On the other hand, showing keen interests and enthusiasm for problem solving indicates dynamism, while quoting adequate sources to confirm claims and fluent speaking are elements of competence, that is, someone who has the competence to solve a problem.
<span>Native American tribes competed for resources and were independent of each other.</span>
