Answer:
Step-by-step explanation:
Hello,
as
The first one is the answer to the first question.
the second one is the answer to the second question
The answer is 6(x^2 -1) I have provided a picture with my work and the answer
The probability that an interaction lasts longer than 4 minutes is 0.0062.
<h3>What is probability theory?</h3>
probability theory in mathematics focus on the analysis of random phenomena and this theory let us know that the outcome of a random event cannot be determined before it occurs.
z = (4 - 3)/.4
z = 1/.4
z = 2.5
0.0062
Hence The probability that an interaction lasts longer than 4 minutes is 0.0062.
Read more on the probability here:
brainly.com/question/3248965
#SPJ1
Answer:
possible answers are shown in picture.
Step-by-step explanation:
