Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.025) related to a Z score. Insert the Z score and other data in the equation above and solve for the score.
The annual snowfall in a town can be represented by the Normal model N(46, 6.8).
In about 2.5% of the years, the annual snowfall in this town will exceed:
A) 46 inches
B) 39.2 inches
C) 52.8 inches
D) 59.6 inches
E) 66.4 inches
I don't know how to set this problem up to choose an answer? I think I would use the empirical rule, but I don't know how to use that for this problem...
1 answer