A lurking variable within statistics is one that is correlated to both the independent variable (a variable that is varied) and the dependent variable (a variable that is measured). A positive correlation between jumping distance and reading ability within a child is likely to be due to the child's age (answer c).
Let
x-------> the time
y-------> the altitude of a helicopter
Step 1
<u>Find the slope of the line</u>
we know that
the slope m of the line between two points is equal to

we have

substitute in the formula



therefore
<u>the answer is the option </u>
The slope is
. This means that the helicopter descends
ft each minute.
Using the probability concept, it is found that there is a
probability the student is a boy.
<h3>What is a probability?</h3>
- A <em>probability </em>is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.
In this problem, according to the two-way table found on the internet when we research the problem:
- There are 11 people who are 12, of which 4 are girls and 7 are boys.
- Hence, in total, there are 21 people, of which 13 are girls and 8 are boys.
- Then, we find that there are 10 people aged 11, of which 6 are girls and 4 are boys.
Then:

There is a
probability the student is a boy.
You can learn more about the probability concept at brainly.com/question/15536019
Answer:
0
Step-by-step explanation:
If you look at -3 the other end is 0 so the answer is 0.