THe weights of the 50 football players are normally distributed with a mean of 178 pounds and a standard deviation of 8 pounds. What is the probability that a player weighs at most 170 lbs?
+128408 I think this is correct
68% of the players fall within one standard deviation.....a player weighing ≤ 170 pounds would lie in the part of the curve to the right of this......so, because of the symmetric nature of the curve, this probability =
[ 100 - 68 ] / 2 = 32 / 2 = 16%
