There Are Two More Assignments in a Class Before Its

question 20

Short Answer

There are two more assignments in a class before its end,and if you get an A on at least one of them,you will get an A for the semester.Your subjective assessment of your performance is $$\begin{array} { l c } { \text { Event } } & \text { Probability } \\\hline \text { A on paper and } A \text { on exam } & .25 \\\text { A on paper only } & .10 \\\text { A on exam only } & .30 \\\text { A on neither } & .35\end{array}$$
a.What is the probability of getting an A on the paper?
b.What is the probability of getting an A on the exam?
c.What is the probability of getting an A in the course?
d.Are the grades on the assignments independent?

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Definitions:

Identical Twins

Twins who develop from a single fertilized egg, sharing the same genetic material.

Polygenic

Referring to a trait that is influenced by multiple genes, often resulting in a continuous range of possible phenotypes.

Skin Colour

Skin colour refers to the pigmentation of an individual's skin which is primarily determined by genetic inheritance and exposure to sunlight.

Phenotypic Similarity

The degree to which two or more organisms resemble each other in their observable characteristics, due to genetic or environmental influences.