Me with this multiple :
scores on a standardized exam are normally distributed with a mean of 59 and a standard deviation of 8. consider a group of 5000 students.
approximately how many students will score less than 67 on the exam?
a) 4039
b) 4195
c) 4207
d) 4219

C) 4207

Step-by-step explanation:

In the figure attached standard normal distribution can be seen. The area under the curve from = 0 to the left is 0.5. You have to find the area between = 0 and Z, where Z is computed as Z = (x - mean)/standard deviation and x is the point of your interest, in this case x = 67. This procedure is made in this way because the table show the case when mean = 0 and standard deviation = 1. So, Z = (67 - 59)/8 = 1 and area = 0.3413. In consequence, the probability of a student to get less than 67 is 0.3413 + 0.5 = 0.8413 (the area under the curve from the left to Z = 1). In terms of students, 0.8413*5000 = 4207

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !