SOLUTION: According to a survey, 40% of adults are against using animals for research. Assume that this result holds true for the current population of all adults. Let x be the number of ad

Question 1178960: According to a survey, 40% of adults are against using animals for research. Assume that this result
holds true for the current population of all adults. Let x be the number of adults who are against using
animals for research in a random sample of two adults.
(a) Obtain the probability distribution of x with and without using Binomial distribution and show that
the results are same.
(b) How do you know that the probability distribution you derived in (a) is valid?
(c) What is the probability that at most one of the adults in the sample are against using animals for
research?

Answer by ikleyn(52824) (Show Source): You can put this solution on YOUR website!
.

Your question (b) reminds me another similar question

    how do you know that  1 + 2 = 3  is valid ?

If you want to learn on how to solve such problems, read the lessons
    - Simple and simplest probability problems on Binomial distribution
    - Typical binomial distribution probability problems
    - How to calculate Binomial probabilities with Technology (using MS Excel)
    - Solving problems on Binomial distribution with Technology (using MS Excel)
    - Solving problems on Binomial distribution with Technology (using online solver)

in this site.

You will find there many similar typical problems of this class, solved and explained with all details.

After reading these lessons, you will be able to solve such problems on your own, which is your
PRIMARY MAJOR GOAL visiting this forum (I believe).

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