What is the coefficient of the term 67xy ? a.6/7 b.1/7 c.6xy d.6
1 answer:
A variable is an English letter we take for unknown values or quantities.We are given expression : .
In the above given expression we have x and y English letters, because we don't know the values of them.
And we have some constant in front of those English letters.
We have in front of xy.
<em>The coefficients are the constant numbers in front of variables.</em>
<h3>Therefore,You might be interested in
Answer:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability using the complement rule:
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:And we can find this probability using the complement rule: