Answer:
The shape and rate parameters are
and
.
Step-by-step explanation:
Let <em>X</em> = service time for each individual.
The average service time is, <em>β</em> = 12 minutes.
The random variable follows an Exponential distribution with parameter,
.
The service time for the next 3 customers is,
<em>Z</em> = <em>X</em>₁ + <em>X</em>₂ + <em>X</em>₃
All the <em>X</em>
's are independent Exponential random variable.
The sum of independent Exponential random variables is known as a Gamma or Erlang random variable.
The random variable <em>Z</em> follows a Gamma distribution with parameters (<em>α</em>, <em>n</em>).
The parameters are:

Thus, the shape and rate parameters are
and
.
Answer:
A and D
Step-by-step explanation:
Statisical questions have to deal with numbers
B is age
C is year
E is a flavor of ice cream
Answer:-7
Step-by-step explanation:do absolute value first and then put the negative sign
Answer:
61236
Step-by-step explanation:
(-infinity,3) (3, infinity)
x does not equal 3