The Gonzalez family sold their home for $256,000. Their real estate agent earned 5.5% in commission of that sale. How much did t
1 answer:
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Answer:
Y=77/x
Explanation:
Y varies inversely with x meaning
adding a proportionality constant gives
Now, we are told that y = 11 and x = 7; therefore, the above gives
Solving for k gives
Therefore, the function that models the inverse variation is
which is our answer!
Answer:
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 scores 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 normal standard table or excel and we got: