Probability

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 all correct answers

 

x      P(x)

 

0      0.4096

1      0.4096

2      0.1536

3      0.0256

4      0.0016

 

 

a.  0.9984

 

b.  0.5904

 

c.  0.0016

 

d. none of the above are correct

Answer 1

c. 0.0016 because according to the table that is the probability of getting 4 correct answers; since there are four questions, that's equal to getting all correct answers.