Enjoy learning Statistics Online! Please be sure to share and subscribe to our YouTube channel.

ASK THE PROFESSOR FORUM

Course Documents

Chapter 1 - Intro

Chapter 2 - Methods for Describing Sets of Data

Chapter 3 - Probability

Chapter 4 - Discrete Random Variables

Chapter 5 - Normal Random Variables

Chapter 6 - Sampling Distributions

Chapter 7 - Confidence Intervals

Chapter 8 - Tests of Hypothesis: One Sample

Chapter 9 - Confidence Intervals and Hypothesis Tests: Two Samples

Sample Exam I: Chapters 1 & 2

Sample Exam II: Chapters 3 & 4

Sample Exam III: Chapters 5 & 6

Sample Exam IV: Chapters 7 & 8

Example 129

Example 129: An economist claims that less than two-thirds of married women spent over $1000 on their wedding gown.  Glamour magazine sponsored a survey of 2500 prospective brides and found that 65% of them spent more than $1,000 dollars on their wedding gown.  Use a 0.01 significance level to test the claim that less than two-thirds of married women spent over $1000 on their wedding gown.  If these results were obtained from internet users who voluntarily went to the web to answer the survey does that affect the result of the survey in any way?

« back