1338 policy holders of an insurance company If we randomly select a policy holder, what is the probability that they are a smoker?   If we randomly select a policy holder, what is the probability that they are a female and a smoker?   If we randomly select a female, what is the probability that she is a smoker?

MATLAB: An Introduction with Applications
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1338 policy holders of an insurance company

  1. If we randomly select a policy holder, what is the probability that they are a smoker?

 

  1. If we randomly select a policy holder, what is the probability that they are a female and a smoker?

 

  1. If we randomly select a female, what is the probability that she is a smoker?

 

sex
no yes
female
139 36
male 134 55
smoker
,, region = southwest
sex
smoker
no yes
female 141 21
male 126 37
Transcribed Image Text:sex no yes female 139 36 male 134 55 smoker ,, region = southwest sex smoker no yes female 141 21 male 126 37
Frequency table:
,, region = northeast
smoker
no yes
female 132 29
male 125 38
sex
,, region = northwest
smoker
sex
no yes
female 135 29
male 132 29
Transcribed Image Text:Frequency table: ,, region = northeast smoker no yes female 132 29 male 125 38 sex ,, region = northwest smoker sex no yes female 135 29 male 132 29
Expert Solution
Step 1

a) From the given data total smoker is, (36+55+21+37)+(29+38+29+29)

                                                                =274

 

Therefore, probability of randomly select  policy holder is the smoker is, 2741338=137669

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