Ch 24 Question 1

1. Resting pulse rates for a random sample of 26 smokers had a mean of 80 beats per
minute (bpm) and a standard deviation of 5 bpm. Among 32 randomly chosen nonsmokers,
the mean and standard deviation were 74 and 6 bpm. Both sets of data were roughly
symmetric and had no outliers. Is there evidence of a difference in mean pulse rate between
smokers and non-smokers? How big?

Stats in the news...

Experiment involving kids and TV violence

http://goo.gl/Y1lku

Surveys Says!

To get to know you...

http://goo.gl/2PWDQ

To gather data for in class assignments...

http://goo.gl/fYrRQ

What is the sample size needed to create a 95% confidence interval with 2% margin of error?

Flashcards for review

Here is a set of online flashcards I found.

http://quizlet.com/267049/ap-statistics-flash-cards/

Ch 27 Finding the C.I. for a predicted value

This should be helpful with question 8 on math xl.

Sorry the program I used did not allow for embedding this video.

Calculating S.E.(b1)

I hope this helps