Mathematics, 10.12.2021 23:10 babyambs50
A statistics teacher had a class of 50 students, of which 31 passed.
The teacher decides to draw 3 students WITHOUT REPLACEMENT to ask their opinion about the subject.
Let Y be the total number of students approved in the course among those drawn by the teacher to give his opinion.
Under these conditions, do what is asked:
1. Determine the probability function of Y
2. Determine the mean and variance of Y
Answers: 2
Mathematics, 21.06.2019 14:30
Factor. 8x2y2 β 4x2y β 12xy 4(8x2y2 β x β 12xy) 4(2xy β 4x2y β 12xy) 4x2y2(2xy β xy β3) 4xy(2xy β x β 3)
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Mathematics, 21.06.2019 14:50
Cumulative examcumulative exam active13time remaining02: 44: 18the graph represents the data cost for monthly internetservice for a cell phone.which function, c(x), represents the monthly cost in dollarsin terms of x, the number of gigabytes used in a month? cell phone internet service(15,5x + 10150,0sx522 < x < 664x115, osx< 25x + 20, 2< x< 650, 65815%,monthly cost (s)20x + 5| 50x,0 < x < 22 < x < 664x( 15x, osx< 2c(x) = 5x + 10, 2< x< 6150x, 65 x5+1234 5 6 7 8 9 10 11 12gigabytes used
Answers: 1
Mathematics, 21.06.2019 17:00
Benito is selecting samples of five values from the table, which row will result in the greatest mean? population data row 1 4 2 2 3 3 row 2 3 3 4 3 2 row 3 2 4 3 4 3 row 4 3 4 4 7 3 row 1 row 2 r
Answers: 3
Mathematics, 21.06.2019 17:30
The sum of two numbers is 12 and their difference is 18 what are the two numbers
Answers: 1
A statistics teacher had a class of 50 students, of which 31 passed.
The teacher decides to draw 3...
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