Answer:
Step-by-step explanation:
A relation from a set X to a set Y is called a function if each element of X is related to exactly one element in Y. That is, given an element x in X, there is only one element in Y that x is related to. ... This is a function since each element from X is related to only one element in Y.
You have to go through your x-axis and up or down you y-axis and then determine if the end point are on the right plot form
Answer:
The t-distribution is used.
Step-by-step explanation:
When we dont know the standard deviation of the population, we use the t-distribution(t-table).
Otherwise, the z-distribution(z-table) is used.
So the answer to this question is the t-distribution.
Hello!
<em><u>Answer: ⇒ 27/20</u></em>
Step-by-step explanation:

Since the denominators are equal, then combine the fractions.

Add by the numbers.


Hope this helps!
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-Charlie