The lifespans of seals in a particular zoo are normally distributed. The average seal lives 13.8 years; the standard deviation is 3.2 years. Use the empirical rule (68−95−99.7%) to estimate the probability of a seal living LESS THAN 7.4 years.

Which ratio is equivalent to 10: 85

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8