<span>The answer is four hundred eighty-six and two thousandths.</span>

**Answer:**

**a)** 0.25

**b) **0.38

**c) **0.12

**d) **0.64

**Step-by-step explanation:**

We have these following informations.

**There are 500 people between 18 and 29. **Of those 190 have at least one tattoo and 310 have no tattoo.

**There are also 500 people between 30 and 50. **Of those, 60 have at least one tattoo and 440 have no tattoo.

**a) P(tattoo)**

There are 1000 people. Of those, 190+60 = 250 have tattoo. So P(tattoo) = 250/1000 = 0.25.

**b)** **P(tattoo|age 18-29)**

There are 500 people aged 18-29. Of those, 190 have at least one tattoo. So P(tattoo|age 18-29) = 190/500 = 0.38.

**c) P(tattoo|age 30-50)**

There are 500 people aged 18-29. Of those, 60 have at least one tattoo. So P(tattoo|age 30-50) = 60/500 = 0.12.

**d) P(age 18-29|tattoo)**

250 people have at least one tattoo. Of those, 160 are between 18 and 29. So P(age 18-29|tattoo) = 160/250 = 0.64.

**Answer:**

**Step-by-step explanation:**

d=13-7=6

Let number of terms=n

l=a+(n-1)d

601=7+(n-1)6

601=7+6n-6

601=6n+1

6n=601-1=600

n=600/6=100

The answer is C. Thats the measure

**Answer:**

b

**Step-by-step explanation:**