Question

Suppose that the PDF for the number of years it takes to earn a Bachelor of Science (B.S.) degree is given in Table 4.31.

a. In words, define the random variable X.

b. What does it mean that the values zero, one, and two are not included for x in the PDF?

Short answer

(a).$X$is a arbitrary variable which represents the no. of times taken by an individual to earn the Maids of Science degree.

(b). Since to complete a bachelorette's degree, minimal no. of times of study is needed is 3. We haven't included $0,1$ and 2.

Step-by-step solution

:Interpretation 

(A) .$X$ is a arbitrary variable which represents the no. of times taken by an individual to earn the Maids of Science degree.

Step 2:Interpretation 

(B).Given

Minimal three times of education is needed to complete the scale which means no bone can get a degree in$0,1and2$times. It's obligatory to study for three times to get Maids of Science degree.