How to Use a Ti‐84 Calculator to Find the Probability Mass Function for a Binomial Distribution

Step-by-Step Guide

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   Step 1: Begin by analyzing the problem.

   Make sure that you the binomial probability density function is what you are trying to find.
   
   We will use an example in which binomial pdf is what we need to use to find the solution.
   
   Find the probability that an event will or will not occur in a given amount of “X” trials, given the “p” probability that it occurs in “n” trials.
   
   For example, if the probability that you will get heads in 10 coin flips is 55%, what is the probability that you will get heads every time in 6 coin flips?
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   Step 2: Identify your values.

   You will have 3 values to enter:
   X=the number of S's (successes) in n trials. n=the number of trials p=probability of the outcome ,,,,, You will be prompted for 'trials:'
   
   'p:'
   
   and 'x value:'.
   
   Start with typing the value for 'trials:'.
   
   Press Enter. ,,,, Press Enter. , You have your answer.
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   Step 3: Press 2nd

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   Step 4: Follow with pressing VARS on your calculator.

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   Step 5: Scroll down until you highlight binompdf(.

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   Step 6: Press Enter.

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   Step 7: Enter the values into the function.

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   Step 8: Type the value for 'p:'

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   Step 9: then press Enter.

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    Step 10: Type the value for 'x value:'

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    Step 11: then press Enter.

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    Step 12: The Paste button should be highlighted

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    Step 13: then press Enter.

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    Step 14: Wait for the function to appear in the calculator's window.

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    Step 15: Voila!

Detailed Guide

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