Question

The grades on the last history exam had a mean of 80%. Assume the population of grades on history exams is known to be normally distributed with a standard deviation of 5. What percent of students earn a score between 70% and 80%?
@ganeshie8

Answer 1

@twinarmageddons

Answer 2

pls help me

Answer 3

remember normally distributed =Bell Curve

Answer 4

hmm ok go on pls

Answer 5

@ikram002p

Answer 6

is it 0.477

Answer 7

hmm i got 0.3 :|
so im wrong

Answer 8

no im not sure

Answer 9

maybe its 0.022

Answer 10

idk
z=70%-80%/5=-0.2
area=0.5-0.2=0.3
but im not sure sry :o
see somone else ^^