Mathematics, 31.01.2020 08:53 rileigh2302
Five marbles are randomly selected with replacement. the probability that a black marble is chosen is 15%. what is the probability that 2 marbles are black ? what is the probability that at least 2 marbles are black ?
Answers: 3
Mathematics, 21.06.2019 17:30
Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?
Answers: 1
Mathematics, 21.06.2019 18:40
Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.
Answers: 1
Mathematics, 21.06.2019 19:00
Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers
Answers: 1
Five marbles are randomly selected with replacement. the probability that a black marble is chosen i...
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