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Math
Mathematical Applications for the Management, Life, and Social Sciences11th Edition

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Chapter 9.5, Problem 47E
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Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
ISBN: 9781305108042

Solutions

Chapter
Section
Problem 1CP
Problem 2CP
Problem 3CP
Problem 4CP
Problem 5CP
Problem 2E
Problem 1E
Problem 4E
Problem 3E
Problem 5E
Problem 6E
Problem 8E
Problem 7E
Problem 9E
Problem 10E
Problem 11E
Problem 12E
Problem 13E
Problem 14E
Problem 15E
Problem 16E
Problem 17E
Problem 18E
Problem 19E
Problem 20E
Problem 21E
Problem 22E
Problem 23E
Problem 24E
Problem 25E
Problem 26E
Problem 27E
Problem 28E
Problem 29E
Problem 30E
Problem 31E
Problem 32E
Problem 33E
Problem 34E
Problem 35E
Problem 36E
Problem 37E
Problem 38E
Problem 39E
Problem 40E
Problem 41E
Problem 42E
Problem 43E
Problem 44E
Problem 45E
Problem 46E
Problem 47E
Problem 48E
Problem 49E
Problem 50E
Problem 51E
Problem 52E
Problem 53E
Problem 54E
Problem 55E
Problem 56E
BuyFindarrow_forward

Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
ISBN: 9781305108042
Textbook Problem

Test reliability If a test having reliability r is lengthened by a factor n, the reliability of the new test is given by

R = n r 1 + ( n − 1 ) r '  0  <   r   ≤  1

Find the rate at which R changes with respect to n.

To determine

To calculate: The rate at which R changes with respect to n, if a test having reliability r is lengthened by a factor n, the reliability of the new test is given by the expression R=(nr1+(n−1)r) at 0≤r≤1.

Explanation

Given Information:

A test having reliability r is lengthened by a factor n, the reliability of the new test is given by the expression R=(nr1+(n−1)r) at 0≤r≤1.

Formula Used:

As per the quotient rule, if two functions are given in the form f(x)g(x), then the derivative is given as:

ddx(fg)=f′.g−g′.fg2.

The rate of the function is the first derivative of the function.

If one function is a sum of multiple functions, then the derivative is:

f′(x)=f1′(x)+f′2(x).

Calculation:

Consider the provided expression, R=(nr1+(n−1)r) at 0≤r≤1,,

In the expression, the value of,

f(n)=nr

And

g(n)=1+(n−1)r=(1+nr−r)

Apply the quotient rule of the expression,

ddn(fg)=ddn(nr).(1+nr−r)−ddn(1+nr−r)

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Sect-9.1 P-1CPSect-9.1 P-2CPSect-9.1 P-3CPSect-9.1 P-4CPSect-9.1 P-5CPSect-9.1 P-6CPSect-9.1 P-7CPSect-9.1 P-8CPSect-9.1 P-9CPSect-9.1 P-10CP
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