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
RideAnS [48]
3 years ago
12

A pollster contacts 74 people in the 18-21 age bracket and finds that 38 of them respond and 36 refuse to respond. When 297 peop

le in the 22-29 age bracket are contacted, 278 respond and 19 refuse to respond. Suppose that one of the 371 people is randomly selected. Find the probability of getting someone in the 18-21 age bracket OR someone who refused to respond. Round to 3 decimal places.
Mathematics
1 answer:
Nonamiya [84]3 years ago
7 0

Answer:

0,250

Step-by-step explanation:

The probability that you looking for is sum of probability of getting someone in the 18-27age (74 persones) and probability to getting someone who refused (36 and 19 persones) - probability of getting some of 18-27 age who refused (36 persons).

The probability is:

P(a or b)= p(a)+p(b)-p(a&b)=74/371+(36+19)/371-36/371=0,199+0,148-0,097=0,250

You might be interested in
If the radius of the Cicular ground is 6m<br>find, the area of ground #plz help​
Fed [463]

Answer:

113.142857 m²

Step-by-step explanation:

As per the provide information in the given question, we have :

  • Radius of the circular ground = 6 m

We are asked to find the area of the ground.

Since, it is in the shape of circle, so we'll apply here the formula to find the area of the circular ground.

We know that,

>> Area of circle = πr

>> Area of the ground = \sf \dfrac{22}{7} × 6 m × 6 m

>> Area of the ground = \sf \dfrac{22}{7} × 36 m²

>> Area of the ground = \sf \dfrac{792}{7} m²

>> Area of the ground = 113.142857 m²

\therefore <u>Therefore</u><u>,</u><u> </u><u>area</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>ground</u><u> </u><u>is</u><u> </u><u>113.142857 m²</u><u>.</u><u> </u>

3 0
3 years ago
Please help me with this question!
Ber [7]
I am un able to see the photo please re try so I can help
8 0
2 years ago
This two-way frequency table shows the results of a survey of users of the mass-transit system in a city. People were asked thei
lora16 [44]

Answer:

if Q={1,3,5,7,9}Express it in description methods

6 0
3 years ago
Plz tell me the aswer and how you worked it out. A tree grows to a height of 13.75m over 5 1/2 years. What is the average annual
marin [14]
1. Take your 13.75 and 5 1/2 and put it into a dividing table 
           _______
     5.5 I13.75               

                              you need to get your decimal out of deviser (5.5) will now be (55) because you moved the decimal over there you also need to move the decimal that is on the inside to and it will be (137.5)

2. When you divide you would get 2.5 

3. Now you would know how much the tree grew over the 5 1/2 years.

ANSWER:  2.5m a year!

Hope this helped! 

:)
4 0
3 years ago
find the height of a cone with a diameter of 12m whose volume is 264m cubed. use 3.14 and round it to the nearest meter
Dima020 [189]

Answer:

775 42512

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • These prisms have different shapes as end faces
    5·1 answer
  • Point p is located at (-3,-2). P is reflected across the x axis to create p what quadrant is p in
    12·1 answer
  • Professor Liu gave the same quiz to the students in her morning class and in her afternoon class. The average (arithmetic mean)
    7·1 answer
  • Can anyone help me solve this function?
    8·2 answers
  • Last questions; I NEED HELP!
    8·1 answer
  • 129-7+6<br>va dau coroana​
    15·2 answers
  • A2(a-p)-a(p2-3ap+a2)-{a(p2+a2)-p(a2+2p2)}​
    9·1 answer
  • A line passes through the point (–1,–2) and is perpendicular to the line with the equation y = –x – 1. What's the equation of th
    14·1 answer
  • PLS I NEED HELP CIRCUMFERENCE
    9·1 answer
  • Can you please help me
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!