Question

A set of test scores is normally distributed with a mean of 53 and a standard deviation of 6. Between what two scores do 68% of the data fall?

Answer 1

For a normal distribution, 68% of test scores fall between mean - std Dev and mean+std dev

Answer 2

what is td Dev and mean+std dev

Answer 3

std dev = short for standard deviation

mean + std dev means add them together

Answer 4

so 59?

Answer 5

the options are a. 47 and 59
b. 41 and 65
c. 48 and 58
d. 50 and 56
e. None correct

Answer 6

and mean - std dev?

Answer 7

47

Answer 8

so the answer is option A?

Answer 9

yep