Answer:
a) 0.1353
b) 0.3679
Step-by-step explanation:
Let's start by defining the random variable T.
T : ''The time (in hours) required to repair a machine''
T ~ exp (λ)
T ~ exp (1)
The probability density function for the exponential distribution is
(In the equation I replaced λ = L)
With L > 0 and x ≥ 0
In this exercise λ = 1 ⇒
For a)
For b)
The event (T ≥ 10 / T > 9) is equivalent to the event T ≥ 1 so they have the same probability of occur
1. D. because if the students she surveyed had just left the movie theatre, meaning they were there to watch a movie, hence the conclusion that they like watching movies can be drawn. 2. D. because the same reason as number 1, the reporter only surveyed people that had shopped there, meaning that the people liked Forever 21 merchandise.
Answer:
I believe it takes : 3 jumps of 1/5 to reach 15.
Step-by-step explanation:
Hope my answer has helped you!
Answer:
B (pretty sure...its been a while)
Step-by-step explanation:
1. The '5x' cancels out since the top number is positive, and the bottom number is negative.
2. Subtract: '4y - 2y' = 2y
3. Subtract '25 - 3' = 22
4. So once you put the answers to part 2 and 3 below the line, you get...
2y = 22