Answer:
15200cm^2
Step-by-step explanation:
we can separate this into 2 equivalent triangles , 2 equivalent rectangles, and 1 extra rectangle.
the area of a triangle is 1/2b*h so 40*60*1/2=1200
we have 2 of these triangles so the area of the triangles in total is 2400.
next, the 2 equivalent rectangles. the area of a rectangle is b*h is 80*50= 4000
we have 2 so the area of these rectangles in total is 8000.
lastly we have one more rectangle 60*80=4800.
then we add all these up 2400+8000+4800= 15200
add unit
15200cm^2
and we're done
Answer:
b
Step-by-step explanation:
Answer: this my pp: 8===========================>
Step-by-step explanation:
Answer:
18.
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem establishes 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.
For a proportion p in a sample of size n(n being at least 30), the sampling distribution of the sample proportion will be approximately normal with mean
and standard deviation 
In this question:
n has to be at least 30. So the choice that answer this question, a size of n too small to use a normal curve to approximate the sampling distribution, is 18.
Answer:
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Step-by-step explanation:
<h3>to understand this</h3><h3>you need to know about:</h3>
<h3>tips and formulas:</h3>
<h3>let's solve:</h3>



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