# Gray-Week5.xlsx - Soft Drinks 15 diet colas 4 cans of...

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Soft Drinks 15 diet colas 4 cans of lemonade 6 cans of root beer 25 TOTAL (a) PROBABILITY OF NEXT DRINK TO BE Formula Discription Example diet colas 0.60 "=no of diet colas/total" "=B3/\$B\$6" cans of lemonade 0.16 "=no of cans of lemonade/total" cans of root beer 0.24 "=no of cans of root beer/total" (b) Classical Definition of Probability Formula Calculation You will need to pick only one of the three definitions, that is most appropriate, then de
elete the other two:
Coins Sample Space Possible Outcome Coin 1 Coin 2 Coin 3 Probability 1 T T T 13% 2 T H T 13% 3 H T T 13% 4 T T H 13% 5 T H H 13% 6 H T H 13% 7 H H T 13% 8 H H H 13% Each time a coin is dropped it will be either a Head H or a Tail T So one possible out come is that all coins show a Tail T: T T T, or first and second coin show a T The probability for each out come is equal to the frequency of the outcome divided over the total time, so its probaility = 1/8 = 0.125 or 12.5%
while third coin show a Head H: T T H, and so on number of outcomes; for example T T T can only occur one
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