In 2006, there were 285 million television sets in the US. If the US population that year was 298.4 million, find the number of
1 answer:
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Answer:
.
Step-by-step explanation:
We have been given a system of equations. We are asked to solve the given system.
From equation (2), we will get:
Upon substituting this value in equation (1), we will get:
Upon multiply by 3 on both side, we will get:
Upon substituting this in equation (2), we will get:
Therefore, the solution for our given system of equations is .
Answer:
24.2(to the nearest tenth)
Step-by-step explanation:
The question is ungrouped data type
standard deviation =√ [∑ (x-μ)² / n]
mean (μ)=∑x/n
=
=33.3
x-μ for data 5, 5, 6, 12, 13, 26, 37, 49, 51, 56, 56, 84 will be
-28.3, -28.3, -27.3, -21.3, -7.3, 3.7, 15.7,17.7, 22.7,22.7,50.7
(x-μ)² will be 800.89, 800.89,745.29,453.69,53.29,13.69,246.49,313.29,515.29,515.29,2570.49
∑ (x-μ)² will be = 7028.59
standard deviation = √(7028.59 / 12)
=24.2