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Binompdf binomial binomcdf - Casio FX570ES Scientific Calculator

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Do you have a question about the binomial probability distribution function or the binomial cumulative distribution function?

Posted on Nov 14, 2013

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Demonstrate how to multiply two binomials


Try to seek these: By using the suggested format:
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  1. Adding and Subtracting Binomials
    • 1

      Arrange each term in each binomial in order of degree from greatest to least. The degree of a binomial is the exponent attached to the term. For example, 4x^2 is a second degree term.

    • 2

      Multiply each term in the binomial that is being subtracted by -1 to turn it into an addition problem. For example, the problem (8x^2 + 8) - (x^2 - 2) becomes (8x^2 + 8) + (-x^2 + 2).

    • 3

      Combine like terms. In the example problem, the x^2 terms are combined and the constant terms are combined, yielding (8x^2 + 8) + (-x^2 + 2) = 7x^2 + 10.

    Multiplying Binomials
    • 4

      Understand the F.O.I.L. method. F.O.I.L. is an acronym standing for first, outside, inside and last. It means that you multiply the first number of the first binomial by the first number of the second, then the numbers on the outside (the first term of the first binomial by the second term of the second binomial) and so on. This ensures that both numbers in the first binomial are multiplied by both numbers in the second.

    • 5

      Use the F.O.I.L. method to multiply the two binomials together. For example, (3x + 4)(3x - 4) = 9x^2 +12x - 12x - 16. Notice that -12x is the product of the outside terms and -16 is the product of the last terms, 4 and -4.

    • 6

      Simplify. There will almost always be like terms to combine. In the example, 12x and -12x cancel out, yielding the answer 9x^2 - 16.

    Dividing Binomials
    • 7

      Use the distributive property to divide both terms in the binomial by the monomial divisor. For example, (18x^3 + 9x^2) / 3x = (18x^3 / 3x) + (9x^2 / 3x).

    • 8

      Understand how to divide by a term. If you are dividing a higher order term by a lower order term, you subtract the exponent. For example, y^3/y = y^2. The number part of each term is handled like any other division problem. For example, 20z / 4 = 5z.

    • 9

      Divide each term in the binomial by the divisor; (18x^3 / 3x) + (9x^2 / 3x) = 6x^2 + 3x.

May 10, 2014 | Computers & Internet

1 Answer

Texas 30XIIB binomial cdf


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.

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

1 Answer

Binompdf equals 0?


If the probability of passing the driving test is 0.8, then the probability of exactly 11 people passing the test out of 200 candidates is less than 1 in 10^100, which is zero as far as the calculator is concerned. Is this what you're trying to calculate?

If you want to know the probability that 11 or more people have passed, then you want 1-binomcdf(200,.8,10) which will give you 1 since the probability of 10 or fewer passing is zero.

Think about it. If you have a group of 200 adults, how likely is it that only 11 of them have driver's licenses?

Mar 20, 2014 | Texas Instruments TI-83 Plus Calculator

1 Answer

Binomial Probability Distribution


I have no idea what the problem is about. When you use the key sequence [2nd][VARS] (Distr) the screen shows two tabs at the top DISTR and DRAW. By default the cursor (or highlight) is on the 1st (DISTR>1:normalPdf). Under that TAB you have 15 distributions. Where ever the cursor might be, you can always direct it to select the distribution you are interested in.

Mar 02, 2013 | Texas Instruments TI-84 Plus Calculator

2 Answers

Err Argument with binomcdf(7,0,.25,2) when trying to find No More than 2


binomcdf() takes two or three arguments, but you're providing four. The first argument is the number of trials (7 looks good for this), the second argument is the probability (.25 looks good for this), and the optional third argument is the number of successes (2 in your case).
Try binomcdf(7,.25,2)

Oct 04, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

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

Feb 22, 2010 | Texas Instruments TI-89 Calculator

3 Answers

I totally forgot how to do binomial pdf can you help on my TI-84


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]

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

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