Answer:
(a) E(X) = 3
(b) Var(X) = 12.1067
Explanation:
(a) E[X]
E[X]T = E[X]T=A + E[X]T=B + E[X]T=C
= (2.6 + 3 + 3.4)/3
= 2.6 (1/3) + 3(1/3) + 3.4(1/3)
= 2.6/3 + 1 + 3.4/3
= 3
(b) Var (X) = E[X²]−(E[X])²
Recall that if Y ∼ Pois(λ), then E[Y 2] = λ+λ2. This implies that
E[X²] = [(2.6 + 2.6²) + (3 + 3²) + (3.4 + 3.4²)]/3
= (9.36 + 12 + 14.96)/3
= 36.32/3
= 12.1067
Var(X) = E[X²]−(E[X])²
= 12 - 3²
= 12.1067 - 9
= 3.1067
Climate change and government action
Answer:
HIV AIDS is contagious disease. It is responsibility of the healthcare professionals to handle the person with special care. This virus spread quickly in the body of the victim and the person is often unaware of the disease due to very mild or no symptoms.
Explanation:
To: CEO
Park lane Hospital
Central London,
09 - 06 -2021.
Respected Sir,
It is to bring into your knowledge about the spread of HIV/AIDS in the city. The people are unaware about the disease spread and those infected are carrying disease to others. There should be campaign run by the hospital to inform people about the spread of this contagious disease and preventions measures.
There should also be special arrangement for the people infected by the disease to stay and live in a separate house so the spread can be stopped. The hospital can allow people with symptoms for a free checkup so that more people can come and have their routine checkup.
It is high time because if the spread will increase at the same rate then controlling the disease would become difficult.
Regards,
John Andrews.
<span>A
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company to be able to compete worldwide. This is used to promote or market its
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different international trading aspects and global market conditions. </span>
