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Square
A square have equal side. If length of a side be 'x' the area of the square is x
1). If we know the length of a square and it is a whole number the, we easily determine the area of the square.To find the area of square take square of that number
2). If we get side length of the square it is whole number, the area should be a perfect square and it is more accurate.
3). If the square with area 45 sq units. then the side of the square is . It is not perfect.45 can be written as 3√5
So it is not a whole number, we get some decimal values
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Answer:
Explained below.
Step-by-step explanation:
(1)
The confidence level is, 91%.
Compute the value of α as follows:
(2)
As the population standard deviation is provided, i.e. <em>σ</em> = 256 psi, the <em>z</em> value would be appropriate.
The <em>z</em> value for α = 0.09 is,
<em>z</em> = 1.69
(3)
Compute the 91% confidence interval as follows:
(4)
The 91% confidence interval for population mean implies that there is a 0.91 probability that the true value of the mean is included in the interval, (2942.29, 3057.71) psi.