OpenStudy (anonymous):
A quiz consists of 20 true-false questions. The score for each question is 1 point if it is answered correctly, and 0 otherwise. 1. Suppose a student guesses the answer to Question 1 on the test by tossing a coin: if the coin lands Heads, she answers True, and if it lands Tails, she answers False. What is the chance that she gets the right answer? 2. Suppose a student guesses the answers to both Questions 1 and 2 as described in 4A, using a different toss for each question. Are the events “gets the right answer to Question 1” and “gets the right answer to Question 2” independent?
OpenStudy (kropot72):
1. The probability of getting the right answer is 1/2. 2. The outcome of each of the 2 tosses has no effect on the outcome of the other toss. Therefore the events are independent.
OpenStudy (anonymous):
thank you :)
OpenStudy (kropot72):
You're welcome :)
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