Answer:
The probability that a randomly selected call time will be less than 30 seconds is 0.7443.
Step-by-step explanation:
We are given that the caller times at a customer service center has an exponential distribution with an average of 22 seconds.
Let X = caller times at a customer service center
The probability distribution (pdf) of the exponential distribution is given by;
Here, = exponential parameter
Now, the mean of the exponential distribution is given by;
Mean =
So, ⇒
SO, X ~ Exp()
To find the given probability we will use cumulative distribution function (cdf) of the exponential distribution, i.e;
; x > 0
Now, the probability that a randomly selected call time will be less than 30 seconds is given by = P(X < 30 seconds)
P(X < 30) =
= 1 - 0.2557
= 0.7443
Answer:
Equation of line: y=3x-18
Step-by-step explanation:
Point: (4,-6) and slope = 3
y=3x-18
Answer:
Name the rooms in basement, ground floor and the attic.
Step-by-step explanation:
The house has 3 levels: basement, ground floor and the attic.
In the basement there's basement study and a laundry room.
On the ground floor there's a kitchen, a dining room and a living room.
In the attic there is a bathroom and two bedrooms: one for children and the other one for the parents.
Answer:
9594.205
Step-by-step explanation: