1. An interviewer knows that the number of necessary visits to the interviewee's home, to be able to find it, is 1,2,3 or 4. Let x be the random variable that represents the number of necessary visits to the interviewee's home.

The probability function is of the form

?F(x)=x/n?

Determine the value of 'n' and relate the columns.

Probability of not finding the interviewee

a)1 b)0.5 c)0.1 d)0.3 e)0.6 or f)0.0

Probability of finding the interviewee in at least 2 visits

a)1 b)0.5 c)0.1 d)0.3 e)0.6 or f)0.0

Probability of finding the interviewee in at least 3 visits

a)1 b)0.5 c)0.1 d)0.3 e)0.6 or f)0.0

Probability of finding the interviewee in 3 visits

a)1 b)0.5 c)0.1 d)0.3 e)0.6 or f)0.0

2. The following table shows the probability distribution of a random variable 'y'

O a. Ob. O c. Xi O d. Pi\f