What is the approximate area of the shaded region under the following standard normal curve?

C. 0.68

Step-by-step explanation:

We have been given a graph of a standard normal distribution curve and we are asked to find the approximate area of the shaded region under the given curve.

Since empirical rule of normal distributions states that approximately 68% of the area under normal distribution curve lies under 1 standard deviation of the mean.

We can see that shaded area under the curve is one standard deviation above and below the mean, so 68% of the area is shaded under the normal curve.

Let us convert 68% into decimal form.

Therefore, approximately 0.68 shaded region is under normal curve and option C is the correct choice.