Answered: How can engaged couples improve their…

Name: How can engaged couples improve their chances of a happy marriage? Olt
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: How can engaged couples improve their chances of a happy marriage? Olthoff (1989) tested the communication quality of couples three months before and again three months after marriage. The data is for the husbands only of one random sample of 10 coup

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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How can engaged couples improve their chances of a happy marriage? Olthoff (1989) tested the communication quality of couples three months before and again three months after marriage. The data is for the husbands only of one random sample of 10 couples who had received ordinary (very minimal) premarital counseling from the ministers who were going to marry them. The scores are for communication quality. Test to see if the scores changed after three months of marriage. The population of difference in communication scores is normally distributed. Test at the 5% level.

Before	After
126	115
133	125
126	96
115	115
108	119
109	82
124	93
98	109
95	72
120	104

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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