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probability:02_multiple_event_probability [2014/01/20 15:55]
marje
probability:02_multiple_event_probability [2014/03/06 13:22]
anna [2.4. Additional exercises]
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 <WRAP task> <WRAP task>
 On Midsummer'​s Day, a probability of a person having a car accident is $0,08$. The probability of a person ​ On Midsummer'​s Day, a probability of a person having a car accident is $0,08$. The probability of a person ​
-driving intoxicated is $0,35$ and probability that a person has a car accident while intoxicated is $0,​2$. ​+driving intoxicated is $0,35$ and probability that a person has a car accident while intoxicated is $0,​02$. ​
 What is the probability of a person driving while intoxicated or having a car accident? What is the probability of a person driving while intoxicated or having a car accident?
  
-++Answer| $\text{Pr}[\text{"​a person driving while intoxicated or having a car accident"​}]=0,​35+0,​08-0,​2=0,​23$++    ​+++Answer| $\text{Pr}[\text{"​a person driving while intoxicated or having a car accident"​}]=0,​35+0,​08-0,​02=0,​41$++    ​
 </​WRAP>​ </​WRAP>​
  
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 ++Answer| Note, that $\text{"​my new friend is female"​}=$\\ ++Answer| Note, that $\text{"​my new friend is female"​}=$\\
 $\text{"​my new friend is female and at most $29$ years"​}\cup $\text{"​my new friend is female and at most $29$ years"​}\cup
-\text{"​my new friend is female and at least $30$ years"​}$,​ and the events ​ +\text{"​my new friend is female and at least $30$ years"​}$,​ and these events ​ are mutually exclusive. ​ 
-$\text{"​my new friend is female and at most $29$ years"​}$ and  +Thus, $\text{Pr}[\text{"​my new friend is female"​}]=0,​1+0,​3=0,​4$.++
-$\text{"​my new friend is female and at least $30$ years"​}$ ​are mutually exclusive. Thus, +
-$\text{Pr}[\text{"​my new friend is female"​}]=0,​1+0,​3=0,​4$.+++
 </​WRAP>​ </​WRAP>​
  
probability/02_multiple_event_probability.txt · Last modified: 2014/03/06 13:22 by anna