Exercise 25 Page 930

When calculating the experimental probability, we are comparing the number of times the event occurs to the number of times the experiment is done. P=Times the Event Occurs/Times the Experiment Is Done This is very similar to the Probability Formula. There are 52 cards in a standard deck of cards, which is also the number of times the experiment is done.

In the deck, there is a total of 3 club face cards, 3 diamond face cards, 3 spade face cards, and 3 heart face cards. The sum of these values is the number of times the event occurs. 3+3+3+3= 12 face cards Now we have enough information to calculate P(Face card).

P=Times the Event Occurs/Times the Experiment Is Done

SubstituteValues

Substitute values

P(Face card)=12/52

ReduceFrac

a/b=.a /4./.b /4.

P(Face card)=3/13

▼

Convert to percent

CalcQuot

Calculate quotient

P(Face card)=0.230769...

RoundDec

Round to 3 decimal place(s)

P(Face card)≈0.231

WritePercent

Convert to percent

P(Face card)≈23.1 %

The probability of choosing a face card is equal to 313 or about 23.1 %.