Answer:
62 is the minimum sample size needed
Step-by-step explanation:
We know that the population is approximately normally distributed so we will use a z-score for 95% confidence, which is 1.96. We are given the population standard deviation of σ = 20, and are given that the error should be 5 or less hours. The fact that it gives us sample data is irrelevant since we are told the population is approximately normally distributed and are given the population standard deviation.
See the attached photo for the calculation of the minimum sample size
Lets reorder the equations
y = x - 1 (1)
y = x +1 (2)
Since both lines have the same slope (m = 1), then this is an inconsistent system with NO solution
Answer:
2g² + 10g
Step-by-step explanation:
Let the,
Length of the rectangle be " l ".
Base of the rectangle be " b ".
l = 2g
b = g + 5
Formula : -
Area of the rectangle = lb
Area of the rectangle
= 2g ( g + 5 )
= 2g ( g ) + 2g ( 5 )
= 2g² + 10g
Therefore,
the area of a rectangle whose sides measure 2g and ( g + 5 ) is 2g² + 10g.
Is it 25? because 25 divided by 2 is 50