Binomial Probability and Standard Deviation
Not what you're looking for?
A random variable X is binomial with n=15, and p=.2.
A) What is the probability that X =4
B) what is the probability that X is at least 2
C) What is the expected value of X? what is the standard deviation of X?
Purchase this Solution
Solution Summary
The expert examines a random variable of X for a binomial with n and p given.
Solution Preview
The binomial probabilities for n=15 and p=0.2 are as follows
x P(X=x)
-------------------------
0 .03518
1 .13194
2 ...
Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
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.
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.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.