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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
Hi Professor,
I had another question about Now You Try It! For Section 6.2. If your looking for the average weight between 40 and 41 wouldn't you add the areas 0.4911 and 0.4370, instead of subtracting? Also, can you go through the problem.
Thank you,
Natalie
Question:
It is recommended that backpacks weigh less than 1/4
th of your body weight. The average backpack with four textbooks and school supplies weighs 38.2 pounds with a standard deviation 7.1 pounds. If a randomly selected group of 36 backpacks is
weighed what is the probability that the average weight for the packs is between 40
and 41 pounds?
Posted to STATS 1 on Thursday, November 7, 2013 Replies: 1
Hi Natalie,
I have created a video explaining the problem.
I hope it answers your questions,
Professor McGuckian