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Exam 1 for the sta 100 course on probability and statistics, held on october 2, 2003. The exam covers various topics such as evaluating expressions, calculating probabilities, mean and standard deviation, and interpreting histograms.
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STA 100 Exam 1 October 2, 2003 Prof. Thistleton
∑^3 i=
(i^3 )
men women total play a sport don′t play a sport total
(a) What is the probability that a randomly selected student plays a sport?
(b) What is the probability that a randomly selected athlete is a woman?
(a) What is the probability that he is wearing a sports hat or sneakers?
(b) What is the probability that he is not wearing a sports hat and is not wearing sneakers?
(c) What is the probability that he is wearing a sports hat given that he is wearing sneakers?
(a) between 42 and 58?
(b) below 38?
(a) What is the probability that you will be successful on 2 of them?
(b) What is the probability that you will be successful on 1 or more of them?
(a) How many elements are in your sample space? List these elements.
(b) Fill in the following table if the probability of Heads is 0.4.
number of heads 0 1 2 probability
(c) Calculate the expected number of heads on 2 tosses.
(a) No Hearts?
(b) One Heart?
(c) Two or more Hearts?