Mathematics, 03.04.2020 21:56 kaywendel2008
Butterflies: • Alice, Bob, and Charlotte are looking for butterflies. They look in three separate parts of a field, so that their probabilities of success do not affect each other. • Alice finds 1 butterfly with probability 17%, and otherwise does not find one. • Bob finds 1 butterfly with probability 25%, and otherwise does not find one. • Charlotte finds 1 butterfly with probability 45%, and otherwise does not find one. Let X be the number of butterflies that they catch altogether. A) Find the expected value of X. B) Write X as the sum of three indicator random variables, X1,X2,X3 that indicate whether Alice, Bob, Charlotte (respectively) found a butterfly. Then X=X1+X2+X3. Find the expected value of X by finding the expected value of the sum of the indicator random variables.
Answers: 1
Mathematics, 21.06.2019 16:30, GalaxyWolf1895
An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.
Answers: 2
Mathematics, 21.06.2019 16:30, danielmurillo28
If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)
Answers: 2
Mathematics, 21.06.2019 19:00, bthakkar25
The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x
Answers: 2
Mathematics, 21.06.2019 20:30, jonmorton159
Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible
Answers: 1
Butterflies: • Alice, Bob, and Charlotte are looking for butterflies. They look in three separate pa...
Computers and Technology, 30.05.2021 22:40
Social Studies, 30.05.2021 22:40
Mathematics, 30.05.2021 22:40
Mathematics, 30.05.2021 22:40
Mathematics, 30.05.2021 22:40
Geography, 30.05.2021 22:50