Mathematics, 04.09.2019 18:30 elisesnelson

An insurance company determines that n, the number of claims received in a week, is a random variable with p[n = n] = 1/2n+1, where n > 0 . the company also determines that the number of claims received in a given week is independent of the number of claims received in any other week. determine the probability that exactly seven claims will be received during a given two week period.
(a) 1/256
(b) 1/128
(c) 7/512
(d) 1/64
(e) 1/32

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Answer from: camco301

(D) $\dfrac{1}{64}$

Step-by-step explanation:

Given : An insurance company determines that N, the number of claims received in a week, is a random variable with

$P[N=n]=(\dfrac{1}{2})^{n+1}$ , where n > 0 .

To determine the probability that exactly seven claims will be received during a given two week period.

Let n is the number of claims during first week ( N_1 ) the 7-n is the number of claims during second week ( N_2 ).

Then , we have

$P(N_1+N_2)=\sum^7_{n=0}P(N_1)P(N_2)$

[ ∵ The number of claims received in a given week is independent of the number of claims received in any other week. ]

= $=\sum^7_{n=0}(\dfrac{1}{2})^{n+1}(\dfrac{1}{2})^{7-n+1}\\\\=\sum^7_{n=0}(\dfrac{1}{2})^{n+1+7-n+1}=\sum^7_{n=0}(\dfrac{1}{2})^{9}\\\\=\dfrac{1}{2}+\dfrac{1}{2}+\dfrac{1}{2}+\dfrac{1}{2}+\dfrac{1}{2}+\dfrac{1}{2}+\dfrac{1}{2}+\dfrac{1}{2}\\\\=\dfrac{8}{512}=\dfrac{1}{64}$

Hence, the probability that exactly seven claims will be received during a given two week period = $\dfrac{1}{64}$

Answer from: Quest

answer: segregation violated the equal protection clause of the 14th amendment, which holds that no state can “deny to any person within its jurisdiction the equal protection of the laws.”

details/explanation:

brown v. board of education of topeka, decided by the us supreme court in 1954, ruled that all americans are entitled to the same civil liberties and protections in regard to access to education. until that decision, it was legal to segregate schools according to race, so that black students could not attend the same schools as white students. an older supreme court decision, plessy v. ferguson (1896), had said that separate, segregated public facilities were acceptable as long as the facilities offered were equal in quality. in the case of brown v. board of education, that standard was challenged and defeated. segregation was shown to create inequality, and the supreme court unanimously ruled segregation to be unconstitutional.

the ruling was important in advancing civil rights because it affirmed that the 14th amendment applies to all rights and privileges of citizens, including access to education. this was being violated by states whose laws supported the segregation of schools. section 1 of the 14th amendment reads as follows:

all persons born or naturalized in the united states and subject to the jurisdiction thereof, are citizens of the united states and of the state wherein they reside. no state shall make or enforce any law which shall abridge the privileges or immunities of citizens of the united states; nor shall any state deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.

Answer from: Quest

she will travel a distance in the range of 3 - 11 miles

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