Originally Posted by
aargh27 I have the key book but my answers aren't coming up the same so I know I am messing up somewhere. If you can help I'd be very thankful
a)
If the mean salary for high school teachers in the US is $29,835 and the standard deviation is $3000, find the probability that a teacher makes more than $35,000.
So I first have to find the Z score, which would be = 35,000-29835 / 3000
Z= 1.72166
which = .4657 (around) after looking at a chart
and to find the probability above 35,000, I had .5000 - .4657 = .0341