aExplain how the sample space no longer needs to be consider

a)Explain how the sample space no longer needs to be considered once the random variable is described. Why? Write it {in English.

Solution

a) As the random varaible is a function which maps the sample space on the reals, that is a function with domain sample space, So once the random varaible is defined all the outcomes in the sample space will be assigned a number, thus the sample space is no more required.

b) The sample space here is the the stock value at the closure, at different days.