For each of the following situations, find an interval that contains (approximately or exactly) 99.73 percent of all the possible sample means. In which cases must we assume that the population is normally distributed? Why?

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

you need to give us more information since we can't answer

the answer is -1 1/5, also a

hope i

-lavira : )

i believe it’s 165 because if u add 137 and 58 u get 195 and then subtract that from 360 and there’s ur answer