Probability of Coin Tosses using Probability Mass Function
Not what you're looking for?
Consider a sequence of independent tosses of a coin. A head (H) or tail (T) is the result of the toss of a coin. P(H) = P(T) = .50.
X is the random variable
Let X be the number of tosses needed to get the first tail.
The p.m.f., probability mass function is given by P(X=x) = (1/2)^x, x = 1,2,...,
Calculate the probability that the first tail appears on an odd number of flips.
Purchase this Solution
Solution Summary
The probability of coin tosses using probability mass function is determined. The solution uses a random variable X.
Solution Preview
Since P(X = n) = (1/2)^n, n = 1, 2, ...
Now we only consider odd n's, that is P(X = ...
Purchase this Solution
Free BrainMass Quizzes
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.