BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

Solutions

Chapter
Section
BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

For each of the following, identify the exam score that should lead to the better grade. In each case, explain your answer.

  1. a. A score of X = 74 on an exam with M = 82 and σ = 8; or a score of X = 40 on an exam with μ = 50 and σ = 20.
  2. b. A score of X = 51 on an exam with μ = 45 and σ = 2: or a score of X = 90 on an exam with μ = 70 and σ = 20.
  3. c. A score of X - 62 on an exam with μ = 50 and σ = 8; or a score of X = 23 on an exam with μ = 20 and σ = 2.

a.

To determine

To identify: The exam score which leads to better grade.

Explanation

Given Info:

The data represents the two set of exam scores with mean and standard deviation, the score of X=74 has a mean of M=82, a standard deviation σ=8. The score of X=40 has a mean of μ=50, a standard deviation σ=20.

Calculation:

The general formula of z -score is,

z=Xμσ

Case 1:

z-score corresponding to X=74:

Substitute the value 74 for X, 82 for M and 8 for σ.

z=Xμσ=74828=1

(b)

To determine

To find: The exam score which leads to better grade.

c.

To determine

To find: The exam score which leads to better grade.

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Math Solutions

Find more solutions based on key concepts

Show solutions add

Solve each equation for x. 51. (a) e74x=6 (b) ln(3x 10) = 2

Single Variable Calculus: Early Transcendentals, Volume I

In Exercises 21-24, find the distance between the given points. 24. (2, 1) and (10, 6)

Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach

Prove that abx2dx=b3a33.

Single Variable Calculus: Early Transcendentals

Sketch the graphs of the equations in Exercises 512. xy=2x3+1

Finite Mathematics and Applied Calculus (MindTap Course List)

The lamina at the right has center of mass (38,65) and uniform density . The moments about the x- and y-axes ar...

Study Guide for Stewart's Single Variable Calculus: Early Transcendentals, 8th

, where E is the wedge-shaped solid shown at the right, equals:

Study Guide for Stewart's Multivariable Calculus, 8th