if a square piece of side 3 cm is cut from a rectangular sheet of paper 6 cm long and 4 cm wide, area of remaining sheet of pape
2 answers:
You might be interested in
Answer:
a) P(x>8) = 0.3937
b) P(x = 2) =0.04661
Step-by-step explanation:
a) From to find the probabilty that in this specific time period, more than 8 cars arrive at the intesection, we use the probability function thus
P(x>8) = 1 - P(x≤8), Cause you can use the complement for calculate this probability , then:
P(x≤8) = , until x= 8, then you obtain:
P(x≤8)=0.6063 and
P(x>8) = 1 - P(x≤8)= 1-0.6063 = 0.3937
b) P(x=2)=
P(x = 2) =0.04661
We have to solve the system of equations by Cramer's rule.
The coefficient matrix is given by
Let us find the determinant of coefficient matrix.
For X-matrix
Now, we find its determinant
For Y-matrix
Now, we find its determinant
Therefore, the value for x is given by
The value for x is 5.