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Did I Get This – Mean of Discrete Random Variable

Published: Feb 2nd, 2013

Here again is the probability distribution of Y, the number of defective parts in an hour in Yves’production line: This document is linked from Discrete Random Variables.

Interactive Applet – Comparing the Mean and Median

Published: Jul 20th, 2013

  Here is an interactive demonstration which lets you build the histogram and compare the mean and median for various shapes. This material is from Interactivate. This document is linked from Measures of Center.

Learn By Doing – Interpretation in Case C-C

Published: Dec 23rd, 2012

Here is our final table and graph for reference: View Post This document is linked from Case C-C.

Interactive Applets – Correlation

Published: Dec 24th, 2012

In order to get a better sense for how the value of r relates to the strength of the linear relationship, take a look at this applet from the Rosman/Chance collection which asks you to guess […]

Did I Get This – Standard Deviation of a Discrete Random Variable

Did I Get This – Standard Deviation of a Discrete Random Variable

Published: Feb 2nd, 2013

Here again is the probability distribution of Y—the number of defective parts in an hour in Yves’ production line: Consider the following expressions: This document is linked from Discrete Random Variables.

Calculators & Tables

Published: Feb 3rd, 2013

We will primarily use the binomial and normal calculators but you may find the other calculators useful for your own investigation later in the course. Discrete Distributions

Learn by Doing – Sample Size

Published: Feb 16th, 2013

A study was done on pregnant women who smoke during their pregnancies. In particular, the researchers wanted to study the effect that smoking has on the pregnancy length. A sample […]

Did I Get This – Binomial Distribution

Published: Feb 3rd, 2013

A Gallup Poll in May 2004 estimated that roughly 70% of U.S. adults are in favor of the death penalty for a person convicted of murder. A random sample of […]

Learn by Doing – Z-Test for a Proportion

Learn by Doing – Z-Test for a Proportion

Published: Oct 22nd, 2013

The objective of this activity is to give you guided practice in carrying out the z-test for the population proportion (p). Background: This activity is based on the results of a […]

Normal Applications

Published: Feb 16th, 2015

Errors: On Slide 5 notes we have P(Z < (63‐62)/1.5) = P( Z < 0.67) when it should be P(Z > (63‐62)/1.5) = P( Z > 0.67). It is correctly spoken in […]