Answer: 0.99822
Step-by-step explanation:
Our inter-arrival time follows Poisson distribution with parameter 14 which is in hour so first we have to calculate this in minutes as we have to calculate probability in minutes.
So converting 14 into minutes will give 
=0.233
Let X=inter-arrival time between two customers
and here 
= 0.233
Probability(X is less than or equal to 2 minutes) = P(X=0) + P(X=1) + P(X=2)
Now the Poisson distribution has PDF = 
So P(X = 0) = 
= 0.79215
P(X= 1) = 
= 0.18457
P(X=2) = 
= 0.02150
Now adding all three probability gives = 0.79215 +0.18457 + 0.02150=0.99822
Answer:
400
Step-by-step explanation:
Method for rounding:
Look at the number 1 place before the place you are rounding to.
If it is greater than 4: round up
otherwise: round down.
Ok,
here the number we're looking at is 8 cuz' 8 is in the ones place.
8 is bigger than 4 so we round up.
398.223 becomes 400
Answer:
n = -23
Step-by-step explanation:
3n + 7 - 11n - 31 = 160
Step 1: Combine like terms
-8n - 24 = 160
Step 2: Simplify
-8n = 184
n = -23
Answer:
10 miles per hour
Step-by-step explanation:
Average velocity=distance covered/time in hours
Distance=2 miles
time=12minute
change minutes to hour=12/60 =0.2hrs
v=2÷0.2
v=10miles per hour
