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Hi!
The line of symmetry is a line that has equal parts of the shape on both sides of it.
Look at the shape. Is there a place where you can put a line that divides it in half? Or will one part of it still be unequal?
I included an image that shows the line of symmetry. Note how the halves of the triangle on both sides of the line are equal.
The line of symmetry is x = 3
Hope this helps! :)
-Peredhel
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Answer:
By the Central Limit Theorem, the best point estimate for the average number of credit hours per semester for all students at the local college is 14.8.
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Mean of the sample:
14.8 credit hours per semester.
So
By the Central Limit Theorem, the best point estimate for the average number of credit hours per semester for all students at the local college is 14.8.