Answer:
0.375, 0.125, 0.5
Step-by-step explanation:
given that you are taking a T/F exam and you have no idea at all about the answers to the last three questions.
Probability for correct guess = 0.5 remains constant for each of the three questions
X - no of questions is binomial with n =3 and p = 0.5
1) the probability that you guessed right on exactly one of the three questions
= P(X=1)
= [tex]3C1(0.5)^3 = 0.375[/tex]
2) the probability that you guessed right on zero of the three questions
= [tex]P(X=0)\\= 0.5^3=0.125[/tex]
3) the probability that you guessed right on at least two of the questions
=[tex]P(x=3)+P(2)\\= 1-0.5\\=0.5[/tex]
