Mathematics, 30.10.2019 13:31 HannaTheGurls
If we sample from a small finite population without replacement, the binomial distribution should not be used because the events are not independent. if sampling is done without replacement and the outcomes belong to one of two types, we can use hypergeometric distribution. if a population has a objects of one type, while the remaining b objects are of the other type, and if n objects are sampled without replacement, then the probability of getting x objects of type a and (n - x) objects of type b is p(x) = a! /(a - x)! x! middot b! /(b - n + - x)! + (a + b)! /(a + b - n)! n! in a relatively easy lottery, a bettor selects 5 numbers from 1 to 13 (without repetition), and a winning 5-number combination is later randomly selected. what is the probability of getting all 5 winning numbers? round your answer to four decimal places.
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Mathematics, 21.06.2019 13:30
Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?
Answers: 3
Mathematics, 21.06.2019 20:20
Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.
Answers: 1
Mathematics, 21.06.2019 23:30
The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume
Answers: 1
If we sample from a small finite population without replacement, the binomial distribution should no...
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