Suppose that 23% of people own dogs If you pick two people at random, what is the probability that they both own a dog? (Let me add that we don’t know the
populations size so calculate the probability as if the population is infinite.)

The correct answer is - 0.0529 or 5.29%

Step-by-step explanation:

Given:

The people own dogs = 23%

total population = infinite

Solution:

if you choose a random person, the probability that they own a dog

= 23% or 0.23.

If you pick two people at random then the probability would be:

P(Both the people own dogs) = P(first person own dogs)*P(second person own dogs)

So the probability is as calculated:  

P(Both the people own dogs)

= 0.23*0.23

= 0.0529 or 5.29%

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

the answer is 23.39370079

step-by-step explanation: