Posted by Leah on Saturday, April 16, 2016 at 3:30pm.
SAT math test scores for all students taking the test are approximately normally distributed with mean score of 514 and std. deviation of 118.
What is the probability that a randomly chosen student will earn a score above 600 on their SAT math test?
There's 19 students, suppose that everyone in class will take the SAT math test soon. What is the probability that the mean score of the class will be above 600?

Elementary Statistics  Leah, Saturday, April 16, 2016 at 4:14pm
I just need the second question, I discovered the first answer iis 72.88%

Elementary Statistics  PsyDAG, Monday, April 18, 2016 at 12:55pm
Z = (scoremean)/SEm
SEm = SD/sqrt n
Use same table.
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