The probability distribution for the random variablexfollows.

xf(x)210.22240.10310.27350.41

1. Is this a valid probability distribution?
2. Select
3. Yes, because all f(x) are 0 and sum of f(x)=1
4. Yes, because all f(x) are 0 and sum of f(x)=1
5. Yes, because all f(x) are 0 and sum of f(x)>1
6. Yes, because all f(x) are = 0 and sum of f(x)=1
7. Item 1
10. What is the probability thatx= 31 (to 2 decimals)?
13. What is the probability thatxis less than or equal to 24 (to 2 decimals)?
16. What is the probability thatxis greater than 31 (to 2 decimals)?