Suppose a thief has stolen your ATM card. The card has a four-digit PIN. The thief knows that the last two digits are 1 and 4; and that second digit is either 1 or 7. He has no idea about the first digit. What is the probability of the thief guessing the correct PIN in three attempts?
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.
Suppose a thief has stolen your ATM card. The card has a four-digit PIN. The thief knows that the last two digits are 1 and 4; and that second digit is either 1 or 7. He has no idea about the first digit. What is the
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