A random sample of 18 observations taken from a normally distributed population produced the following data: 28.4 27.3 25.5 25.5 31.1 23.0 26.3 24.6 28.4
37.2 23.9 28.7 27.9 25.1 27.2 25.3 22.6 22.7
What is the point estimate of μ?
Make a 99% confidence interval for μ.
What is the margin of error of estimate for μ in part b?

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the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.

y-3=-3/2(x+4)

ur very much welcome