What z score in a normal distribution has 33% of all score above it? ap stats quiz 2.2a answers?

What z score in a normal distribution has 33% of all score above it?

A z score which has 33% of all scores above it, will have 67% of all scores  below it.

To find the required z score, we need to find the z value corresponding to probability 0.67.

Using the standard normal table, we have:

Therefore, the z score = 0.44 has 33% of all score above it.

Hello there.

The faces of a green tetrahedron die are marked 10,20,30 and 40. All three die are thrown together and the scores added. Find the probability that the total is more than 30 but less than 35.

Pr(>30)=1-pr(three 10s)=1-1/4 ^3 
Pr ( 30<total<35)=0