Dice and dollars You roll a die, winning nothing if thenumber of spots is odd, $1 for a 2 or a 4, and $10 for a 6.a) Find the expected value and standard deviation of yourprospective winnings.b) You play twice. Find the mean and standard deviationof your total winnings.c) You play 40 times. What’s the probability that you winat least $100?
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.
Dice and dollars You roll a die, winning nothing if the
number of spots is odd, $1 for a 2 or a 4, and $10 for a 6.
a) Find the
prospective winnings.
b) You play twice. Find the mean and standard deviation
of your total winnings.
c) You play 40 times. What’s the probability that you win
at least $100?
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