Question:
An urn contains 5 red and 2 black balls. Two balls are randomly drawn. Let X represent the number of black balls. What are the possible values of X? Is X a random variable?
An urn contains 5 red and 2 black balls. Two balls are randomly drawn. Let X represent the number of black balls. What are the possible values of X? Is X a random variable?
Options:
- X = 2, 3, 5; yes
- X = 2, 3, 4; no
- X = 2, 1, 3; yes
- X = 0, 1, 2; yes
- X = 2, 3, 5; yes
- X = 2, 3, 4; no
- X = 2, 1, 3; yes
- X = 0, 1, 2; yes
Correct Answer: d)
Explanation:
‘ An urn contains 5 red and 2 black balls. Two balls are randomly drawn. Let X represent the
number of black balls, therefore the possible √alues of X= 0, 1, 2. Yes, X is a random
‘ √ariable.
17
‘ An urn contains 5 red and 2 black balls. Two balls are randomly drawn. Let X represent the
number of black balls, therefore the possible √alues of X= 0, 1, 2. Yes, X is a random
‘ √ariable.
17