posted by Sarah .
bob received a z score of 0.9 on a college entrance exam. If the raw scores have a mean of 540 and a standard deviation of 80 points,what is his raw score?
Z = (score - mean)/ standard deviation
.9 = (score - 540)/80
Solve for score.
i can learn statistics problems
The mean scores on the stats exam was 75 points with a standard deviation of 5 points and becks z score was -2. How many points did he score?