BuyFind

Essentials Of Statistics

4th Edition
HEALEY + 1 other
Publisher: Cengage Learning,
ISBN: 9781305093836
BuyFind

Essentials Of Statistics

4th Edition
HEALEY + 1 other
Publisher: Cengage Learning,
ISBN: 9781305093836

Solutions

Chapter
Section
Chapter 5, Problem 5.10P
Textbook Problem
537 views

S O C The average number of dropouts for a school district has been 305 per year with a standard deviation of 50. What is the probability that the number of dropouts next year will be

a. less than 250? __________

b. less than 300? ________

c. more than 350? _____________

d. more than 400? ____________

e. between 250 and 350? ___________

f. between 300 and 350? ___________

g. between 350 and 375? ___________

Expert Solution
To determine

a)

To find:

The probability that the number of students next year will be less than 250.

Explanation of Solution

Given:

The average number of dropouts for a school district has been 305 per year with a standard deviation of 50.

Description:

The normal curve is symmetrical and its mean is equal to the median. The area below and above the mean is 50% or 0.05.

Formula used:

Let the data values be denoted by Xi.

The formula to calculate the Z score is given by,

Z=XiX¯s

Where, X¯ is the mean and s is the standard deviation of the distribution.

Calculation:

Given that the mean is 305 and standard deviation is 50.

The number of dropout is 250

Expert Solution
To determine

b)

To find:

The probability that the number of students next year will be less than 300.

Expert Solution
To determine

c)

To find:

The probability that the number of students next year will be more than 350.

Expert Solution
To determine

d)

To find:

The probability that the number of students next year will be more than 400.

Expert Solution
To determine

e)

To find:

The probability that the number of students next year will be between 250 and 350.

Expert Solution
To determine

f)

To find:

The probability that the number of students next year will be between 300 and 350.

Expert Solution
To determine

g)

To find:

The probability that the number of students next year will be between 350 and 375.

Want to see this answer and more?

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

See solution

Additional Math Textbook Solutions

Find more solutions based on key concepts
Show solutions
What is the value of (X + 1) for the following scores: 0, 1, 4, 2? a. 8 b. 9 c. 11 d. 16

Essentials of Statistics for The Behavioral Sciences (MindTap Course List)

Add or Subtract Perform the addition or subtraction and simplify. 41. 1x+5+2x3

Precalculus: Mathematics for Calculus (Standalone Book)

Write the sum in expanded form. 6. k=58xk

Single Variable Calculus: Early Transcendentals, Volume I

A population with a mean of = 8 has SX = 40. How many scores are in the population?

Statistics for The Behavioral Sciences (MindTap Course List)

Evaluate the integral. tan1xx2dx

Calculus (MindTap Course List)

THE NARROWING Gender Gap Since the founding of the Equal Employment Opportunity Commission and the passage of e...

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

In Problems 7-12, find .

Mathematical Applications for the Management, Life, and Social Sciences

Factor completely. x36

Trigonometry (MindTap Course List)

Evaluate .

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

Explain the difference among the terms research strategy, research design, and research procedure.

Research Methods for the Behavioral Sciences (MindTap Course List)

The Professional Golfers’ Association of America (PGA) collects a wide variety of performance data for members ...

Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)

Reminder Round all answers to two decimal places unless otherwise indicated. Logistic Population Growth The gra...

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)

In Problems 2730 express the solution of the given initial-value problem in terms of an integral-defined functi...

A First Course in Differential Equations with Modeling Applications (MindTap Course List)