# Chapter 5 to 6 Standard Deviation Worksheet

Everythingisin the file

- A sample has a mean of
*M*=90 and a standard deviation of*s*= 20 .- Find the
*z*-score for each of the following*X*values.

- Find the

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### UNFORMATTED ATTACHMENT PREVIEW

Homework 3 This homework assignment covers material that is discussed in chapters 5 and 6 of the course. Turn in your answers to these questions only! 1. A sample has a mean of M =90 and a standard deviation of s = 20 . a. Find the z-score for each of the following X values. X = 95 X = 98 X = 105 X = 80 X = 88 X = 76 b. Find the X value for each of the following z-scores. z = -1.00 z = 0.50 z = -1.50 z = 0.75 z = -1.25 z = 2.60 2. Define the following: a. The normal curve b. Z-scores c. What is the difference between the normal curve and the z-distribution? d. What are the values of the means and standard deviation of the z-distribution? 3. Find the z-score corresponding to a score of X = 30 for each of the following: a. µ =50 and σ = 20 b. µ =50 and σ = 10 c. µ =20 and σ = 5 d. µ =20 and σ = 2 4. A sample has a mean of M =75

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