A study recently confirmed that of every 100 citizens of a certain state, 60 are considered overweight. There were 279 million
2 answers:
Answer:
Number of overweight citizens were 16.74 million.
Step-by-step explanation:
In a study it was concluded that out of 100 citizens 60 citizens were overweight.
If population was 279 million then we have to calculate overweight citizens.
We will apply unitary method in this question.
∵ Out of 100 citizens overweight citizens are = 60
∴ out of 1 citizens overweight were =
∴ out of 279 millions overweight citizens were = [tex]\frac{60}{100}(279) = .06×279 = 16.74 million.
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Answer:
a)
b)
c)
Step-by-step explanation:
Data given
x: 500, 700, 750, 590 , 540, 650, 480
y: 7.00, 7.50 , 9.00, 6.5, 7.50 , 7.0, 4.50
Part a
We want to create a linear model like this :
Wehre
And:
With these we can find the sums:
And the slope would be:
Nowe we can find the means for x and y like this:
And we can find the intercept using this:
And the line would be:
Part b
The correlation coefficient is given by:
For our case we have this:
n=7
The determination coefficient is given by:
Part c