a normal curve with a mean of 400 and a standard deviation of 50 how much of the data falls within the shaded region of 309 to 500?

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

ghjmutmum

step-by-step explanation:

80

step-by-step explanation: