Find the indicated area under the curve of the standard normal distribution, then convert it to a percentage and fill in the blank. About % of the area is between zequalsnegative 1 and zequals1 (or within 1 standard deviation of the mean).

68.28% of data lies under the curve between z equals -1 and z equals 1 .

Step-by-step explanation:

We are given the following in the question:

We are given a standard normal distribution.

We have to find the area under the curve between z equals -1 and z equals 1 that is within one standard deviation.

Empirical Formula:

Thus, from Empirical formula 68.28% of data lies under the curve between z equals -1 and z equals 1 .

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step-by-step explanation:

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.