SOLUTION: Can someone show me how to do these, please?
A student studying for a vocabulary test knows the meanings of 10 words from a list of 26 words. If the test contains 10 words from
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-> SOLUTION: Can someone show me how to do these, please?
A student studying for a vocabulary test knows the meanings of 10 words from a list of 26 words. If the test contains 10 words from
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Question 922490: Can someone show me how to do these, please?
A student studying for a vocabulary test knows the meanings of 10 words from a list of 26 words. If the test contains 10 words from the study list, what is the probability that at least 8 of the words on the test are words that the student knows? (Round your answer to three decimal places.)
Three cards are drawn without replacement from a well-shuffled deck of 52 playing cards. What is the probability that the third card drawn is a heart?
Among 500 freshmen pursuing a business degree at a university, 311 are enrolled in an economics course, 200 are enrolled in a mathematics course, and 122 are enrolled in both an economics and a mathematics course. What is the probability that a freshman selected at random from this group is enrolled in each of the following? (Enter your answers to three decimal places.)
(a) an economics and/or a mathematics course
Correct: Your answer is correct.
(b) exactly one of these two courses
(c) neither an economics course nor a mathematics course
You can put this solution on YOUR website! .
(a) an economics and/or a mathematics course 389/500 = .778
(311-122) + (200-122) + 122 = 189 + 78 + 122 = 389
(b) exactly one of these two courses: 267/500 = .534
(311-122) + (200-122) = 189 + 78 = 267
(c) neither an economics course nor a mathematics course: 111/500 = .222
500 - 389
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