Question

Find the z score boundaries that separate a normal distribution as described in each of the following scores?

What formula should I use?

(can someone show me how to do one of them, I'll do the rest).



A. The middle 30% from the 70% in the tails.

B. The middle 40% from the 60% in the tails.

C. The middle 50% from the 50% in the tails.

D. The middle 60% from the 40% in the tails

Answer 1

The formula involves a lot of complicated calculus. So you're best off using a calculator

Answer 2

do you have a TI83 or TI84?

Answer 3

TI-84, yes.

Answer 4

TI-84 Plus

Answer 5

ok great

Answer 6

let's start off with a drawing

Answer 7

draw the normal bell curve