Probability- Multiple Choice

Question

A multiple-choice test has four questions. For a student making random guesses for each answer, the probabilities for the number of correct responses are given in this table. Assume that a student makes random guesses for each question and find the probability of getting at least one correct answer

 

x      P(x)

 

0       0.4096

1       0.4096

2       0.1536

3       0.0256

4       0.0016

 

a.  0.5904 or approximately 59%

 

b.  0.4096 or approximately 41%

 

c.  approximately 50%

 

d.  none of the above are correct

Answer 1

b. 4096 or approximately 41%

because according to the table that is the probability of getting 1 correct answer P(1); that's equal to getting at least one correct answer.