Posted by Jennifer on .
I. Use Chebyshev’s theorem to find what percent of the values will fall between 183 and 227 for a data set with a mean of 205 and standard deviation of 11.
II. Use the Empirical Rule to find what two values 99.7% of the data will fall between for a data set with a mean of 297 and standard deviation of 18.

Stats 
PsyDAG,
1. Z = (scoremean)/SD
Find the Z scores and apply your theorem.
2. 99.7% fall between Z scores of ± 3.
Use the equation above. 
Stats 
Jennifer,
1. Z = (s205)/11 = 205/11 = 18.63???
This one confuses me
2. I have no idea how to do this....
Please help!! 
Stats 
PsyDAG,
1. Z = (183205)/11 = 22/11 = 2
Z = (227205)/11 = ?
Apply the theorem.
2. 3 = (score297)/18
3 = (score297)/18
Solve for each score. 
Stats 
Jennifer,
okay so the first would be 0.75 correct?
the second one would be
3 = 16.46
3 = 16.46
is this correct?