Adult panda weights are normally distributed with a mean of 200 pounds and a standard distribution of 20 pounds. The largest pandas weigh over 250 pounds. Approximately what percent of the adult pandas weight over 250 pounds?

250-200/20=2.5

P (2.5) =.9938

that's the probability under 250 pounds. over would be 1-.9938=.0062

0.62%

To answer this problem we have to have a Standard Normal Distribution table because we need to look up z scores. Then we use this equation

z = (value - mean) / (standard deviation) = (250-200) / 20 = 2.5.

The z score is then 2.5 If so, look up z=2.5 on the left edge then you then determine from the table what the area to the left of that is.

Here are the conditions:

p (z>2.5) = 1

p (z<2.5) =.621

1-.621 =.379

100-37.9 = 62.1

Given that, we should go with. 621%.