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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

For 14.4, problem 2: I think you got the wrong answer... p= .05 in the beginning, and you looked up .5 on the chart. Look out for this!

Posted to STATS 2 on Thursday, April 20, 2017   Replies: 1


Professor Mcguckian
04/20/2017
2:32 PM EST

Hi Demi,

You always use p = 0.50 on the binomial table when solving a sign test problem. The reason is that the claim is about the median for a population. The 0.50 comes from the fact that the median is the 50th percentile.

Also, the 0.05 in this problem is the significance level, which is denoted by alpha. It is not the value that you use when visiting the binomial table. The significance level is used to make your initial conclusion once the p-value has been calculated.

Professor McGuckian

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