Question

this is 1 question 3 stepswhat is the formula for:1. to find z scores2. to find x values3. how do you find confidence intervals for means and proportions? Write a sentence or share an example

Answer 1

(1) Find the formula for z scores.

Before we find the formula, let's know what z scores means.

Z- score is simply the raw score minus the population mean, divided y the population standard deviation.

So, the z-score formular is:

z = x - μ

σ

Where:

x is the raw score

μ is the population mean

σ