1. What is the z-score for an observation of 10.9 when the mean is 11.8 and the standard deviation is 1.3?
2. Suppose that I flip a fair coin 34 times. What is the probability that it will land on heads exactly 19 times?
Make sure your answer is between 0 and 1.
3. Suppose you are taking a multiple choice exam with 75 questions, each with 4 possible answers. If you were to guess at random for each question, how many questions would you expect to get right?
Your answer does not need to be an integer.
Thank you!
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1. What is the z-score for an observation of 10.9 when the mean is 11.8 and...
Suppose that I flip a fair coin 34 times. What is the probability that it will land on heads exactly 19 times? Make sure your answer is between 0 and 1.
Suppose you are taking a multiple choice exam with 75 questions, each with 4 possible answers. If you were to guess at random for each question, how many questions would you expect to get right? Your answer does not need to be an integer.
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Suppose you are taking a multiple choice exam with 65 questions, each with 4 possible answers. If you were to guess at random for each question, how many questions would you expect to get right? Your answer does not need to be an integer.
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