According to reuters, a survey undertaken by the national center for health statistics revealed that about 25% of u. s. households have only a cell phone (no land line). according to the fcc, 65% of u. s. households have high-speed internet. suppose of u. s. households having only a cell phone, 80% have high-speed internet. a u. s. household is randomly selected.

a. what is the probability that the household has only a cell phone and has high-speed internet?
b. what is the probability that the household has only a cell phone or has high-speed internet?
c. what is the probability that the household has only a cell phone and does not have high-speed internet?
d. what is the probability that the household does not have just a cell phone and does not have high-speed internet?
e. what is the probability that the household does not have just a cell phone and does have high-speed internet?

a) P=0.8

b) P=0.67

c) P=0.05

d) P=0.33

e) P=0.45

Step-by-step explanation:

a. What is the probability that the household has only a cell phone and has high-speed Internet?

This probability is stated in the question: "Suppose of U.S. households having only a cell phone, 80% have high-speed Internet", so the probability is P=0.8.

b. What is the probability that the household has only a cell phone or has high-speed Internet?

This probability is equal to the sum of the probability of having only a cell phone and the probability of having high-speed internet, less the probability of having both (to avoid counting this household twice).

c. What is the probability that the household has only a cell phone and does not have high-speed Internet?

This is equal to the probability of not having high-speed internet given that it has a cell phone (complementaty of the proability of Point (a)) multiplied by the probability of having a cell phone.

d. What is the probability that the household does not have just a cell phone and does not have high-speed Internet?

This probability is complementary of the one calculated in Point (c).

e. What is the probability that the household does not have just a cell phone and does have high-speed Internet?

This is equal to the probability of having high-speed internet less the probability it has both (cell phone and internet).

40 minutes

step-by-step explanation:

add the time and multiply by 2

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )