For 200 tosses, we would expect 100 heads and 100 tails.
How many possible outcomes are there when flipping a coin 2 times?
four possible outcomes
In an experiment of flipping two coins, there are four possible outcomes.
The expected frequency is a probability count that appears in contingency table calculations including the chi-square test. Expected Frequencies are counts calculated using probability theory. For example, before you roll a six-sided die, you calculate the probability of any one number being rolled as 1/6.
What is the theoretical probability of tossing a head coin?
The probability of getting heads on the toss of a coin is 0.5. If we consider all possible outcomes of the toss of two coins as shown, there is only one outcome of the four in which both coins have come up heads, so the probability of getting heads on both coins is 0.25.
How many nickels and dimes are in a penny?
A good way to do this is to consider that since you have 4 total coins (1 penny, 1 nickel, 1 dime, and 1 quarter… I am understanding correctly that you have 4 total coins, right?) and you can choose 1 or more coins, you will be choosing 1,2,3 or 4 coins.
Do you notice a pattern between a penny and a nickel?
Then you would choose the nickel and note how many choices you have for your second coin from there. Do you notice a pattern? Also take note that if you choose a penny and then a nickel, that is the same amount as choosing a nickel then a penny, so some of your choices will, in reality, be the same amount.
