Question
Twenty thousand students in your state took the ACT test. On the math portion the mean was 21
and the standard deviation was 5. If the scores resulted in a normal distribution, how many students scored at
least 16?
and the standard deviation was 5. If the scores resulted in a normal distribution, how many students scored at
least 16?
Answers
oobleck
16 is 1 std below the mean.
So what does your Z table say about that?
So what does your Z table say about that?