The number of cars an American family owns follows the distribution below:

 

 

a) Verify that this is a legitimate probability distribution.

b) Interpret (in words) the notation P(X>2).

c) Interpret (in words) the notation P(X=2).

d) Find P(X>2)

A study of social mobility in America examined the social class attained by the sons of lower class fathers. Social classes were numbered from 1 to 5 with 1 representing the lower class and 5 the higher class. Consider the random variable X to the class of a randomly chosen son. The study found the following distribution:

a) What percent of the sons reached the highest class?
b) Check that this distribution meets the requirements of a discrete probability distribution.
c) What is P(X<2)?
d) What is P(X=2)?
e) Write the event: a son of a lower class father attains one of the highest two social classes in terms of X.

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Status NEW Posted 04 Sep 2017 01:09 PM My Price 5.00

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