Find the probability of guessing correctly atleast 6 out of 10 questions in (i) True or false type examination (ii) multiple choice with 4 possible answers.

The probability of guessing correctly atleast 8 out of 10 answers on a true falsetype examination is

What is the probability of guessing correctly at least 8 out of 10 answer on true-false examination?

What is the probability of guessing correctly at least 8 out of 10 answer on true-false examination?

Find the probability of guessing at least 6 out of 10 answers in True false type examination

The probability of guessing atleast 8 correct answers out of 10 true /false questions

The probability of guessing the correct answer to a certain test questions is x/(12) If the probability of not guessing the correct answer to this question is 2/3 then x = (a)2 (b) 3 (c) 4 (d) 6

There are 12 true - false questions in an examination .How many seqences of answer are possible?

In an entrance test, there are multiple choice questions. There are four possible answers to each question, of which one is correct. The probability that a student knows the answer to a question is 90%. If the gets the correct answer to a question, then find the probability that he was guessing.

In an entrance test, there are multiple choice questions. There are four possible answers to each question, of which one is correct. The probability that a student knows the answer to a question is 90%. If the gets the correct answer to a question, then find the probability that he was guessing.

In answering a question on a multiple choice test, a student either knows the answer or guesses. Let 3/5 be the probability that he knows the answer and 2/5 be the probability that he guesses. Assuming that a student who guesses at the answer will be correct with probability 1/3 , what is the probability that the student knows the answer given that he answered it correctly