Question

The weights of newborn elephants are normally distributed with a mean of 225 pounds and a standard deviation of 45 pounds. Find the probability that a newborn elephant weighs more than 210 pounds.

Answer 1

0.63043

Explanation:

Given that :

Mean = 225

Standard deviation = 45

P(x > 210) : (x - mean) / standard deviation

P(x > 210) = (210 - 225) / 45

P(x > 210) = - 0.333

P(Z > - 0.333) = 0.63043 (Z probability calculator)