Match the followings. A. 0.525 B. 2.43 C. 1.61 D. 0.255 E. 0.235 select 1. P(X=3)%3D select 2. P(XS2)= select 3. E(X)= select 4. V(X)= select 5. P(XS1)%3D

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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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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To find out the prevelance of smallpox vaccine use, a researcher inquired into the number of times a randomly selected 200 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
B. 2.43
C. 1.61
D. 0.255
E. 0.235
select
1. P(X=3)=
select
v 2. P(XS2)=
select
- 3. E(X)=
select
4. V(X)=
select
5. P(XS1)=
Transcribed Image Text:To find out the prevelance of smallpox vaccine use, a researcher inquired into the number of times a randomly selected 200 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 B. 2.43 C. 1.61 D. 0.255 E. 0.235 select 1. P(X=3)= select v 2. P(XS2)= select - 3. E(X)= select 4. V(X)= select 5. P(XS1)=
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