Question about Texas Instruments TI-86 Calculator

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Posted on Jan 02, 2017

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SOURCE: TI-85 manual

I have the original TI-85 Graphics Calculator Guidebook (quite thick), but I no longer own the calculator. You are welcome to have it, since I was just about to throw it away. If you want it, please e-mail me at: srairigh@iserv.net within the next week, as I'd like to get it off my desk. Thanks! -- Sandy

Posted on Aug 30, 2008

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SOURCE: How do I increase the screen brightness on my TI-85 calculator?

push the 2nd key and then the up arrow.

Jon

Posted on Mar 26, 2009

SOURCE: I totally forgot how to do binomial pdf can you

Hello,

Press the yellow [2nd] key then [VARS] (DISTR) to access the distributions. Scroll Up or down to see 0:binompdf( . Press 0 |ENTER|. The command echoes on the screen as **binompdf(. **Complete the command by entering the number of trials, the probability of success, and the value expected. Number of trials, and the value expected are integers.

You can also run the command giving it a sequence of expected values. In that case the sequence of expected values must be enclosed in curly brackets

Hope it helps.**binompdf ( number of trials, p, { expec_value1, expec_value2, ...} )** [ENTER]

Posted on Oct 31, 2009

SOURCE: Missing binompdf and cdf on my ti-89

Do you have the Stats/List-Editor app loaded? If not, you can download it from http://education.ti.com

You can also try StatLite, available from http://www.ticalc.org

Posted on Feb 22, 2010

Testimonial: *"Thank you so much!! ONE more thing, do i need a specific usb cable or can i use any usb a to usb mini A cable?"*

SOURCE: How do I fix the contrast on a ti 85 Calculator

Turn the calculator on. Press and release the 2ND key. Press and hold the up-arrow key to increase or the down-arrow key to decrease the contrast.

Posted on Jul 01, 2010

The only known equation for the cumulative binomial distribution is the sum of the individual binomial probabilities. Some more sophisticated (and more expensive) calculators have that equation built in, but the 30xii does not.

If n>30 and n*p>5 and n*(1-p)>5 then you can approximate the cumulative binomial with the normal probability function, but again the 30xii does not have that built in.

If n>30 and n*p>5 and n*(1-p)>5 then you can approximate the cumulative binomial with the normal probability function, but again the 30xii does not have that built in.

Apr 14, 2014 | Texas Instruments TI-30 XIIS Calculator

See cap images below

Oct 22, 2013 | Texas Instruments TI-34II Explorer Plus...

I encountered this same problem with the TI-84. Turns out you have to put your P (Percentage) as out of one hundred. For example. With my problem I had;

Trails: 13

P: 53/100

X Value: L1 (List 1)

And then it posted my probabilities to the L2 list. For some reason if you just put 53, or whatever your percentage of success in, it won't calculate.

Trails: 13

P: 53/100

X Value: L1 (List 1)

And then it posted my probabilities to the L2 list. For some reason if you just put 53, or whatever your percentage of success in, it won't calculate.

Jun 19, 2012 | Texas Instruments TI-84 Plus Calculator

Using elementary algebria in the **binomial theorem, **I expanded the power **(***x* + *y*)^n into a sum involving terms in the form a x^b y^c. The coefficient of each term is a positive integer, and the sum of the exponents of *x* and *y* in each term is **n**. This is known as binomial coefficients and are none other than combinatorial numbers.

**Combinatorial interpretation:**

Using** binomial coefficient (n over k)** allowed me to choose** ***k* elements from an **n**-element set. This you will see in my calculations on my Ti 89. This also allowed me to use **(x+y)^n** to rewrite as a product. Then I was able to combine like terms to solve for the solution as shown below.

(x+y)^6= (x+y)(x+y)(x+y)(x+y)(x+y)(x+y) = x^6+6x^5y+15x^4y^2+20x^3y^3+15x^2y^4+6xy^5+y^6

**This also follows Newton's generalized binomial theorem:**

**Now to solve using the Ti 89.**

Using

(x+y)^6= (x+y)(x+y)(x+y)(x+y)(x+y)(x+y) = x^6+6x^5y+15x^4y^2+20x^3y^3+15x^2y^4+6xy^5+y^6

**Using sigma notation, and factorials for the combinatorial numbers, here is the binomial theorem:**

**The summation sign is the general term. Each term in the sum will look like that as you will see on my calculator display. Tthe first term having k = 0; then k = 1, k = 2, and so on, up to k = n. **

Jan 04, 2011 | Texas Instruments TI-89 Calculator

http://education.ti.com/downloads/guidebooks/graphing/85/85book-eng.pdf

Dec 02, 2010 | Texas Instruments TI-85 Calculator

Hello,

Sorry, but you information is wrong, to find the binomial distribution use the PROB menu not the STAT menu. Its name is randBi

[2nd][MATH][F2:PROB] scroll right.

Hope it helps.

Sorry, but you information is wrong, to find the binomial distribution use the PROB menu not the STAT menu. Its name is randBi

[2nd][MATH][F2:PROB] scroll right.

Hope it helps.

Oct 10, 2009 | Texas Instruments TI-86 Calculator

Page 1-3 of this manual discusses adjusting the contrast of TI-85.

http://education.ti.com/downloads/guidebooks/graphing/85/85book-eng.pdf

http://education.ti.com/downloads/guidebooks/graphing/85/85book-eng.pdf

Oct 02, 2009 | Texas Instruments TI-85 Calculator

Yes, eleven million is rather extreme for the binomial distribution. For this large a value the binomial distribution is sufficiently indistinguishable from the normal approximation.

Apr 15, 2009 | Texas Instruments TI-84 Plus Calculator

You can download the manual for free here:

http://education.ti.com/downloads/guidebooks/graphing/85/85book-eng.pdf

http://education.ti.com/downloads/guidebooks/graphing/85/85book-eng.pdf

Jan 10, 2009 | Texas Instruments TI-85 Calculator

I have the original TI-85 Graphics Calculator Guidebook (quite thick), but I no longer own the calculator. You are welcome to have it, since I was just about to throw it away. If you want it, please e-mail me at: srairigh@iserv.net within the next week, as I'd like to get it off my desk. Thanks! -- Sandy

Aug 13, 2008 | Texas Instruments TI-85 Calculator

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