Belief in UFOs A survey found that 10% of people believe that they have seen a UFO. Choose a sample of 15 people at random. Find the probability of the following. Round intermediate calculations and final answers to at least three decimal places. (a) At least 2 people believe that they have seen a UFO (b) 2 or 3 people believe that they have seen a UFO (c) Exactly 3 people believe that they have seen a UFO
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Belief in UFOs A survey found that
of people believe that they have seen a UFO. Choose a sample of
people at random. Find the probability of the following. Round intermediate calculations and final answers to at least three decimal places.
(a) At least 2 people believe that they have seen a UFO
(b) 2 or 3 people believe that they have seen a UFO
(c) Exactly 3 people believe that they have seen a UFO
This question is from my homework and has three parts. I understand I have to use the Binomial Probability Formula but where I am lost is how do I find out my X values for each one mainly part (a).
The Formula:
P(x) = n!/(n-x)!x! (times) p^x (times) q^n-x
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