1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MAVERICK [17]
3 years ago
13

4.20. According to a report released by the National Center for Health Statistics, 51% of U.S. households has only cell phones (

no land line). According to the FCC, nearly 70% of the U.S. households have high-speed Internet. Suppose of the U.S. households having only cell phones, 80% have high-speed Internet. A U.S household is randomly selected. a. What is the probability that the household has only cell phones and has high-speed Internet
Mathematics
1 answer:
Sergeu [11.5K]3 years ago
7 0

Answer:

The probability that the household has only cell phones and has high-speed Internet is 0.408

Step-by-step explanation:

Let A be the event that represents U.S. households has only cell phones

Let B be the event that represents U.S. households have high-speed Internet.

We are given that 51% of U.S. households has only cell phones

P(A)=0.51

We are given that 70% of the U.S. households have high-speed Internet.

P(B)=0.7

We are given that U.S. households having only cell phones, 80% have high-speed Internet. A U.S household is randomly selected.

P(B|A)=0.8

\frac{P(A\capB)}{P(A)}=0.8\\P(A\capB)=0.8 \times P(A)\\P(A\capB)=0.8 \times 0.51\\P(A\capB)=0.408

Hence the probability that the household has only cell phones and has high-speed Internet is 0.408

You might be interested in
(SAT Prep) In the figure, what is the value of y?<br> A. 20°<br> B. 90°<br> C. 40°<br> D. 30°
omeli [17]

See attachment for math work and answer.

8 0
3 years ago
Read 2 more answers
Here is a trapezium drawn on a centimetre grid (not drawn to scale).
labwork [276]

Answer:

Step-by-step explanation:

equation

area(base1 + base2)

5 0
3 years ago
Read 2 more answers
Marta’s math textbook weighs Four-fifths of a pound less than 4 times the weight of the book she is reading for her language art
jeyben [28]

4 x minus four-fifths = 2 and one-fifth; x = three-fourths of a pound

5 0
3 years ago
Help need step by step answer getting time <br><br> 1+2r=35
Olegator [25]

Answer:

r=17

Step-by-step explanation:

35-1=34

2r=34

34 divided by 2 is 17

6 0
2 years ago
Read 2 more answers
Use the information in the diagram to determine the height of the tree to the nearest foot
Burka [1]
There is no diagram here 
3 0
3 years ago
Read 2 more answers
Other questions:
  • Please help The weight of a full steel bead tire is approximately 800 grams, while a lighter wheel weighs only 700 grams. What i
    8·1 answer
  • If I had 2 watermelons and 4 grapes. How many cherries do I have
    15·1 answer
  • An object that weighs 1 pound on earth weighs only 0.17 pounds on the moon. Zach's dog weighs 17 1/2 pounds on earth. How much m
    10·1 answer
  • -x+ y = 12<br> x-2y=3<br><br> Please help
    5·2 answers
  • Item 9 A surveyor is standing 118 feet from the base of the Washington Monument. The surveyor measures the angle of elevation fr
    5·1 answer
  • 5 ordinary quarters and have a quarter with two heads are placed in a hat. one quarter selected at random and tossed twice. if t
    5·1 answer
  • Find the repeating decimal between -2 1/3 and -2 1/5.
    6·1 answer
  • Jenny earned 92 of a possible 120 points on a test. She lost 4 points for each
    15·2 answers
  • Given that IK is a midsegment of AFGH, find GH.
    10·2 answers
  • A proportional relationship between the number of pounds of cabbage (x) and the price in dollars (y) is graphed, and the ordered
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!