MandysNotes

Lessons

Lessons
Wednesday, 27 January 2010 21:57

Volumes by Integration: Cylindrical Shells

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{module [79]}

Disclaimer: I did not create nor do I own these videos.  I have simply embedded them, courtesy of YouTube.

Wednesday, 27 January 2010 21:53

Volumes by Integration: Disk / Washer Method

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{module [79]}

Disclaimer: I did not create nor do I own these videos.  I have simply embedded them, courtesy of YouTube.

Here is an example problem worked through completely:

Here's Example 2!

And Example 3!

Sunday, 24 January 2010 02:04

BinomPDF & BinomCDF on TI-83

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Saturday, 23 January 2010 22:09

Population Mean & SD vs Sample Mean & SD

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Saturday, 23 January 2010 22:09

Population Distribution vs. Sample Distribution

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{module [79]}

Saturday, 23 January 2010 22:05

Sample Size: Proportion

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Saturday, 23 January 2010 14:46

NormalPDF Command on TI-83

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normalpdf(x,?,?)

Saturday, 23 January 2010 00:00

Sample Standard Deviation

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The sample standard deviation is almost the same formula as Lowercase Sigma = Population Standard Deviation, except that the denominator calls for N - 1 (one less than the number of values given).

Saturday, 23 January 2010 03:28

invNorm on TI-83

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Command Syntax

invNorm(percentile[,??])

Press:

1. 2ND DISTR to access the distribution menu
2. 3 to select invNorm(, or use arrows.

Example: Suppose X represents the scores on an exam and is normally distributed with mean 85 and standard deviation 10.

We want to find the value of x such that 90% of the distribution is below it. This means we are looking for the 90th percentile.

1) Press 2nd DISTR 3. This brings up InvNorm(
2) Type .90 comma 85 comma 10
3) Press ) button.
4) Press ENTER

The value you get is the 90th percentile for X.

Saturday, 23 January 2010 03:21

NormalCDF Command on TI-83

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Press:

1. 2ND DISTR to access the distribution menu
2. 2 to select normalcdf(, or use arrows.

normalcdf( start, end, mean, std_dev)

For the standard normal distribution: normalcdf(-1,1

For the normal distribution with mean 10 and std. dev. 2.5: normalcdf(5,15,10,2.5

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