Open the Binomial Calculator in StatCrunch (Stat-Calculators-Binomial). This is

Question

Open the Binomial Calculator in StatCrunch (Stat-Calculators-Binomial). This is used to find Binomial probabilities. Use the values of n and p that you decided on above. Please keep in mind that we are dealing with a discrete random variable. Each individual value of the variable has a probability assigned to it which may not be zero (meaning the intervals Xck and Xsk will usually have different probabilities). This differs from the continuous case where individual values have a probability of zero. If a student goes and asks a random sample of 100 fellow students their preference (based on a taste test), what is the probability that exactly 50% will prefer Coca-Cola? Represent this using probability notation and use the binomial calculator to find the probability. Paste the results (graph with the probability shaded) from StatCrunch below. 3. 4. Another student goes and asks a random sample of 100 fellow students their cola preference (based on a taste test). what is the probability that less than 55% of those asked will prefer Coke? Represent this using probability notation and use the binomial calculator to find the probability. Paste the results (graph with the probability shaded) from StatCrunch below

Explanation / Answer

To run binomial in statcrunch, please see the steps below: -

Stat -> Calculators -> Binomial

3)

n!/x!(n-x)!*p^x*q^n-x

n=100, p=0.5, x=50, q=0.5

0.079589 is the correct answer

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