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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

Hello Professor,
I need help solving 43 in the homework of 5.3. I also don't understand 44. For 44, I got the answer 1.03, but the correct answer is 1.30.
Please help.
Thank you

Posted to STATS 1 on Monday, November 4, 2013   Replies: 1


Professor Mcguckian
11/04/2013
8:00 PM EST

Hi Christina,

I have posted a video for question 43 from the homework.

For question 44, based on the answer you found, it is clear that you have the bottom 5% not the top 5%. The question reads, "What is the ratio separating the highest (best) 5% from the rest?" You need to find the top 5% not the bottom. This means your z-score will be positive, not negative.

Hope that helps,

Professor McGuckian

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