close solutoin list

Research has demonstrated that people tend to be attracted to others who are similar to themselves. One study demonstrated that individuals are disproportionately more likely to marry those with surnames that begin with the same letter as their own (Jones, Pelham. Carvallo, & Mirenberg, 2004). The researchers began by looking at marriage records and recording the surname for each groom and the maiden name of each bride. From these records it is possible to calculate the probability of randomly matching a bride and a groom whose last names begin with the same letter. Suppose that this probability is only 6.5%. Next, a sample of n = 200 married couples is selected and the number who shared the same last initial at the time they were married is counted. The resulting observed frequencies are as follows: Same Initial Different Initials l 19 181 200 Do these data indicate that the number of couples with the some last initial is significantly different than would be expected if couples w ere matched randomly? Test with α = .05.

BuyFind

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781133956570
BuyFind

Essentials of Statistics for the B...

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

Solutions

Chapter
Section
Chapter 15, Problem 5P
Textbook Problem

Research has demonstrated that people tend to be attracted to others who are similar to themselves. One study demonstrated that individuals are disproportionately more likely to marry those with surnames that begin with the same letter as their own (Jones, Pelham. Carvallo, & Mirenberg, 2004). The researchers began by looking at marriage records and recording the surname for each groom and the maiden name of each bride. From these records it is possible to calculate the probability of randomly matching a bride and a groom whose last names begin with the same letter. Suppose that this probability is only 6.5%. Next, a sample of n = 200 married couples is selected and the number who shared the same last initial at the time they were married is counted. The resulting observed frequencies are as follows:

Same Initial Different Initials l
19 181 200

Do these data indicate that the number of couples with the some last initial is significantly different than would be expected if couples w ere matched randomly? Test with α = .05.

Expert Solution

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

See Solution

*Response times vary by subject and question complexity. Median response time is 34 minutes and may be longer for new subjects.

Chapter 15 Solutions

Essentials of Statistics for the Behavioral Sciences
Show all chapter solutions

Additional Math Textbook Solutions

Find more solutions based on key concepts
Show solutions
In Exercises 107-120, factor each expression completely. 112. x2 2x 15

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

Evaluate the integral. 19. tsin2tdt

Single Variable Calculus: Early Transcendentals

For y=43+2x, y = _____. a) 4(3 + 2x)3/2 b) 4(3 + 2x)3/2 c) 2(3 + 2x)1/2 d) 2(3 + 2x)1/2

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

Practice Simplify each radical expression. -32100,0005

College Algebra (MindTap Course List)

13. Given that z is a standard normal random variable, compute the following probabilities. P(−1.98 ≤ z ≤ .49) ...

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

Estimating Rates of Change with the calculatorMake a graph of 3x and use the calculator to estimate its rate of...

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

In Problems 2334 proceed as in Example 4 and find the Laplace transform of f g using Theorem 7.4.2. Do not eva...

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