Answer:
The probability that X and Y are both positive and that their sum is less or equal to 1 0.64.
Step-by-step explanation:
It is provided that the random variables <em>X</em> and <em>Y </em>follows a standard normal distribution.
That is,
It is also provided that the variables <em>X</em> and <em>Y </em>are statistically independent of each other.
Compute the probability that X and Y are both positive and that their sum is less or equal to 1 as follows:
The mean and standard deviation of <em>X</em> + <em>Y</em> are:
The probability is:
*Use the <em>z</em>-table.
Thus, the probability that X and Y are both positive and that their sum is less or equal to 1 0.64.
You can’t really see the question
Answer:
( 19/3, -1)
Step-by-step explanation:
3x + 4y = 15
3x + 4(-1) = 15
3x -4 = 15
3x= 19
x= 19/3
Answer:
Step-by-step explanation:
s= student ticket
g= general admisson ticket
4s+6g=2876
s+g=525
4s+6g=2876
-4s-4g=-2100
add both equations
2g=776
g=388
s+g=525
s+388=525
s=137
They're independent because she put the quarter back in her pocket. if she didn't it would be dependent