Mathematics, 18.11.2019 18:31, deeboss177
Abuilding has n+1 floors: a ground floor g and floors1,2,…,n . one morning, m people enter the elevator on the ground floor. each person gets out on one of the n floors above the ground floor, selected uniformly at random, independent of all other people. the elevator doesn't stop at any other floors. let x be the number of floors at which the elevator stops. find e(x) and var(x).
Answers: 2
Mathematics, 22.06.2019 00:00, keshjdjsjs
The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels
Answers: 1
Mathematics, 22.06.2019 03:30, davidsouth444
Calculate the mean value (expected value) of the following discrete variable x (10 points): x = 0, 1, 2, 3, 4, 5, 6 p(x) = 0.2, 0.2, 0.15, 0.15, 0.15, 0.1, 0.05
Answers: 1
Abuilding has n+1 floors: a ground floor g and floors1,2,…,n . one morning, m people enter the elev...
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