Answer:
so what are the equations you're having trouble with?
Answer:
And if we solve for a we got
Step-by-step explanation:
Let X the random variable that represent the lenght time it takes to find a parking space at 9AM of a population, and for this case we know the distribution for X is given by:
Where
and
For this part we want to find a value a, such that we satisfy this condition:
(a)
(b)
As we can see on the figure attached the z value that satisfy the condition with 0.7 of the area on the left and 0.3 of the area on the right it's z=0.524
If we use condition (b) from previous we have this:
But we know which value of z satisfy the previous equation so then we can do this:
And if we solve for a we got
Answer:
H is not a solution
Step-by-step explanation:
plug each point into the equation and see which one does not work.
F(-3,6): 4(-3) + 3(6) = 6, -12 + 18 = 6, 6=6
G(0,2): 4(0) + 3(2) = 6, 6=6
H(1,-2): 4(1) + 3(-2) = 6, 4 - 6 =6, -2=6
J(3,-2): 4(3) + 3(-2) = 6, 12 -6 = 6, 6=6
H is not a solution