Students 34

Students conducted a a survey as part of a Statistics project to determine if younger adults are more likely to have tattoos. The results are listed in the two-way table below:

ageAt least 1 tattoo No tattoo Row totals
Age 18 - 29 165 342 507
Age 30 - 50 64 484 548
Column Totals 229 826 1055

What is the Probability that a person chosen at random:

**LEAVE ALL ANSWERS AS FRACTIONS**

a. ) Has at least 1 tattoo? =


b. ) Is between 30 - 50 years old? =


c. ) Is Age 18 - 29 AND has No tattoo =


d. ) Has at least 1 tattoo GIVEN they are between 30 - 50 years old? =


e. ) is between 18 - 29 years old GIVEN they have at least 1 tattoo? =


f. ) Is between 18 - 29 years old OR has No tattoo? =

Correct answer:

a =  229/1055
b =  548/1055
c =  342/1055
d =  64/229
e =  55/169
f =  991/1055

Step-by-step explanation:

a=1055229=1055229=0.2171
b=1055548=1055548=0.5194
c=1055342=1055342=0.3242
d=22964=22964=0.2795
e=507165=16955=0.3254
f=1055507+826342=1055991=0.9393



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