To evaluate the probability that a randomly selected day will be between 28 and 34 minutes we proceed as follows:
P(28<x<34)
First we evaluate the z-score for the above values:
z=(x-σ)/μ
μ=26.7
σ=5.1
when:
x=28
z=(28-26.7)/5.1
z=0.26
P(z<0.26)=0.6026
when x=34
z=(34-26.7)/5.1
z=1.43
P(z<1.43)=0.9236
hence:
P(28<x<34)=0.9236-0.6026=0.321~32.1%
Answer:
Option C) G.
Step-by-step explanation:
Verify each expression
case E) we have

Any number plus zero equals the original number (Identity property of addition)
-----> is a decimal number
case F) we have

Any number plus zero equals the original number (Identity property of addition)
-----> is a decimal number
case G) we have

Any number plus zero equals the original number (Identity property of addition)
-----> is an integer
case H) we have

division by zero is undefined