Answer: 60
Step-by-step explanation: 60 because if you do 3×20 You get 60 which is higher than 50 and lower than 100 :)
Step-by-step explanation:
please type the question properly
Answer:


Step-by-step explanation:
The given parameters can be represented as:

Solving (a): P(x < 3)
This is calculated as:
----- i.e. all probabilities less than 3
So, we have:


Solving (b): Expected number of events
This is calculated as:

So, we have:



Express as decimal

Approximate to the nearest integer
