Select the correct answer.
1 answer:
A graph is a way to represent a lot of data in such a visual format that it is easy for the user to understand the complete information in one go. The correct statement is D.
<h3>What is a graph?</h3>A graph is a way to represent a lot of data in such a visual format that it is easy for the user to understand the complete information in one go. Usually, the line of the graph is a function that follows the graph.
If we draw the graph of the Cohen family, then the graph will look as shown below. Therefore, if we observe the graph of the Cohen family and the graph of the Mason family. Then we will observe that the wheat production of both farms will approach a stable amount as the years pass.
Hence, the correct statement is D.
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Answer:
<em>The 9th percentile of X is 44.96</em>
Step-by-step explanation:
<u>Percentiles for a Normal Distribution</u>
The standard normal distribution can be used for computing percentiles. For example, the median is the 50th percentile being the center value, the first quartile is the 25th percentile, and so on.
To compute percentiles of a normal distribution we can use the formula
Where is the mean,
is the standard deviation of the variable X, and z is the z-score value from the standard tables
The value of X can also be directly obtained from digital tables included in math packages and tools like Excel.
The Excel NORM.INV Function calculates the inverse of the cumulative Normal Distribution Function for a given value of p, and
.
We'll use the values
NORM.INV(0.09,53,6) results in 44.96 which means the 9th percentile of X is 44.96
We could have used the standard normal distribution, which only needs the value of p
That is the value of z, we now apply the formula
We get the very same result as before