To find out the prevelance of smallpox vaccine use, a researcher inquired into thenumber of times a randomly selected 201 people aged 16 and over in African villagehad been vaccinated. He obtained the following figures: never, 17 people; once, 30;twice, 58; three times, 51; four times 38; five times, 7. Assuming these proportionscontinue to hold exhaustively for the population of that village. Let X denote therandom variable representing the number of times a person aged or older in thisvillage has been vacinated.Match the followings.A. 0.525В. 2.43C. 1.61D. 0.255E. 0.235select1. P(X=3)=2. P(Xs2)=3. E(X)=selectselectselect - 4. V(X)=select5. P(Xs1)=

Answered: Image /qna-images/answer/2705729a-9cbf-4ab4-b8f0-4997fcae3d43.jpg

nue to hold exhaustively for the population of that village. Let X om variable representing the number of times a person aged or e has been vacinated. h the followings. -25 13 51 255 35 Et 1. P(X=3)= Et 2. P(Xs2)= Et 3. E(X)= Et 4. V(X)=

nue to hold exhaustively for the population of that village. Let X om variable representing the number of times a person aged or e has been vacinated. h the followings. -25 13 51 255 35 Et 1. P(X=3)= Et 2. P(Xs2)= Et 3. E(X)= Et 4. V(X)=

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

To find out the prevelance of smallpox vaccine use, a researcher inquired into the
number of times a randomly selected 201 people aged 16 and over in African village
had been vaccinated. He obtained the following figures: never, 17 people; once, 30;
twice, 58; three times, 51; four times 38; five times, 7. Assuming these proportions
continue to hold exhaustively for the population of that village. Let X denote the
random variable representing the number of times a person aged or older in this
village has been vacinated.
Match the followings.
A. 0.525
В. 2.43
C. 1.61
D. 0.255
E. 0.235
select
1. P(X=3)=
2. P(Xs2)=
3. E(X)=
select
select
select - 4. V(X)=
select
5. P(Xs1)=

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