Hey guys, I would very much appreciate any help you can give.
The original question was SAT scores have a mean of 500 and a standard deviation of 100. Suppose you draw a random sample of 49 scores from the population of SAT scores.
a) Calculate the standard error of the mean for the sampling distribution!
So i came up with this SE = s/sqrt n or 100/sqrt49 = 100/7 =14.7
b) What is the probability that the sample mean will fall above 490?
I have no idea how to calculate this any help would be much appreciated! P.s I lost my book so any equations or links to a good z table would also be appreciated!
The original question was SAT scores have a mean of 500 and a standard deviation of 100. Suppose you draw a random sample of 49 scores from the population of SAT scores.
a) Calculate the standard error of the mean for the sampling distribution!
So i came up with this SE = s/sqrt n or 100/sqrt49 = 100/7 =14.7
b) What is the probability that the sample mean will fall above 490?
I have no idea how to calculate this any help would be much appreciated! P.s I lost my book so any equations or links to a good z table would also be appreciated!