Given a normal distribution with mean 120 and standard deviation 5, find the number of standard deviations the measurement is from the mean. express the answer as a positive number. 134.9

Given a normal distribution with mean 120 and standard deviation 5.

We have to find number of standard deviations the measurement 134.9 is from the mean . For that we have to find z score corresponding to 134.9

The formula to find z score is

Z =

=

= 2.98

The measurement 134.9 is 2.98 standard deviation from mean

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.