Answer:
a) P(X > 10) = 0.6473
b) P(X > 20) = 0.4190
c) P(X < 30) = 0.7288
d) x = 68.87
Step-by-step explanation:
Exponential distribution:
The exponential probability distribution, with mean m, is described by the following equation:

In which
is the decay parameter.
The probability that x is lower or equal to a is given by:

Which has the following solution:

The probability of finding a value higher than x is:

Mean equal to 23.
This means that 
(a) P(X >10)

So
P(X > 10) = 0.6473
(b) P(X >20)

So
P(X > 20) = 0.4190
(c) P(X <30)

So
P(X < 30) = 0.7288
(d) Find the value of x such that P(X > x) = 0.05
So






The answers or your problem is x=6
Answer:
-20 x^6
Step-by-step explanation:
(4x)(-x^2)(5x^3)
Multiply the numbers
4*-1 *5 = -20
Add the exponents
x^1 * x^2 * x^3
x^(1+2+3)
x^6
Multiply back together
-20 x^6
Answer:
The number will be -13
Step-by-step explanation:
Let the no. be x
Its twice will be = 2x
According to the question ,

Answer:
It's either y=1/2x or y=2x
Step-by-step explanation:
Have a wonderful night!!!!