Question

the weights of koala bears are normally distributed with a mean of 20 lbs and a standard deviation of 3 lbs. approximately what percentage of koala bears weigh more than 11 lbs?

Answer 1

99.7%

Explanation:

μ = 20 lbs

τ = 3 lbs

x = 11 lbs

`Z=(x-\mu)/(\tau)`

`=(11-20)/(3)`

`=-3`

P(x>11) = 99.7%