The lifespans of gorillas in a particular zoo are normally distributed. the average gorilla lives 20.8 years; the
standard deviation is 3.1 years.
use the empirical rule (68 – 95 - 99.7%) to estimate the probability of a gorilla living less than 23.9
years.

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?

Which graph represents the given linear function 4x+2y=3

Which geometric principle is used to justify the construction below?