Answer:
Step-by-step explanation:
Given that X, the number of square feet per house is N(mean, 137)
Sample size = 19
Sample mean x bar =1350 sq ft
Since population std dev is given,
std error of sample =
Since sample size is small, t critical value can be used
df = 18
t value for 80% two tailed = 1.333
Margin of error = ±1.333(std error) = ±
Confidence interval = sample mean ±margin of error
=
The equation which is used to determine x, the width of the window is, . Option B shows the correct expression for width x of the window.
Length is describing how long is the object. The width is defined as how wide is the object.
Given that the width of the window is 4.9 feet. The length is given as 0.6 feet less than 2.5 times its width.
The height of the window is given as,
The other height of the window is given as,
When equating both equations, we get,
Therefore, an equation which is used to determine x, the width of the window is, . Option B shows the correct expression for width x of the window.
To know more about the length and width, follow the link given below.