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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

Ask the Professor Forum

Hi there Profe!
On Ch.8-#33: Why do we Reject the null? The P-value is 4.1%, which is > the alpha at 4%.
I thought we only reject when P-value is < alpha. Let me know, thanks!!

Posted to STATS 2 on Tuesday, September 23, 2014   Replies: 2


Professor Mcguckian
09/23/2014
10:54 AM EST

Hi Gisselle,

The p-value in this problem is 0.0041, which is 0.41%, not 4.1%. Because the p-value is less than alpha, we reject the null hypothesis. You know the rule, so that is good. You just overlooked the extra zero in the p-value.

Professor McGuckian


.
09/23/2014
11:04 AM EST
A-ha! ok, thanks!

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