The probability that a person in the United States has blue eyes is 27%. Four unrelated people in the United States are selected at random. a. Find the probability that all four have type blue eyes.
b. Find the probability that none of the four have blue eyes.
c. Find the probability that at least one of the four has blue eyes.
d. Find the probability that all four have brown eyes. Can this be done with this information?

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

it’s the first one your welcome

2/3=10/15

1/5=3/15

10+3=13/15

2 13/15 is the answer