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
maria [59]
3 years ago
7

19​% adults favor the use of unmanned drones by police agencies. Twelve U.S. Adults are randomly selected. Find the probability

that the number of U.S. Adults who favor the use of unmanned drones by police agencies is​ (a) exactly​ three, (b) at least​ four, (c) less than eight. Round answers three decimal places please!
Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
8 0

Answer:

0.2264

0.1795

0.2264

Step-by-step explanation:

Given that:

p = 19% = 0.19

Sample size (n) = 12

Using binomial distribution formula :

p(x = x) = nCx * p^x * (1 - p)^(n-x)

1 - p = 1 - 0.19 = 0.81

Exactly 3:

p(x = 3) = 12C3 * 0.19^3 * 0.81^9

p(x = 3) = 220 * 0.001029499103502116970939

= 0.2264

B.) Atleast 4 :

P( x ≥ 4) = p(4) + p(5) + p(6) + p(7) + p(8) + p(9) + p(10) + p(11) + p(12)

To save time, we can use a binomial probability calculator :

P( x ≥ 4) = 0.1795

C.) Less than 8:

P( x < 8) = p(7) + p(6) + p(5) + p(4) + p(3) + p(2) + p(1) + p(0)

P(x < 8) = 0.9995

You might be interested in
Which of the following is NOT a perfect square trinomial?
DIA [1.3K]
The second one is a perfect square trinomial
X^2+16x+64
7 0
3 years ago
describe the slopes of the parallel lines. Then, give an example of two linear equations that are parallel
Ivan
The slopes are the same.
Example: y=2x+5 & y=2x+7
3 0
3 years ago
You are given two functions f(x) and g(x). How has the graph of g(x) changed from that of f(x)?
madreJ [45]

Answer:

C. g has been shifted down five units and to the left two units from f

Step-by-step explanation:

Sana makatulong

8 0
3 years ago
Will give brainliest answer
makvit [3.9K]

Answer:

28 . 26cm

Step-by-step explanation:

First find the radius

d = 2r \\ 9 = 2r \\  \frac{9}{2}  =  \frac{2r}{2}  \\ r = 4.5

Now find the CIRCUMFERENCE

c = 2\pi \: r \\  = 2 \times \pi \times 4.5 \\  = 9 \times \pi \\  = 28.26

5 0
3 years ago
In any linear relationship, explain why the slope is always the same.
7nadin3 [17]
Because if it is linear it is a straight line so the slope must always be equal to eachother
7 0
3 years ago
Other questions:
  • Megan roused 366,458 to 370,000.To which place did megan round the number?
    15·2 answers
  • Alone has $800 to buy a computer at an annual interest rate of 10% how much interests will he have old in 3 years. Use the formu
    9·1 answer
  • a model of a railroad station has has a scale of 1 inch equals 3.5 ft the dimensions of the model railroad station are 34 inches
    10·1 answer
  • PLEASE REALLY NEED HELP
    15·1 answer
  • A firm just paid an annual dividend of $1.40 and increases that dividend by 2 percent each year. How do you find the price if th
    8·1 answer
  • How do you find The value of a parallelogram
    7·1 answer
  • Heeeelllpppp
    8·2 answers
  • (EASY MULTIPLE CHOICE I BEG YOU)
    6·1 answer
  • Solve 5x + 20=75<br> What is x
    7·1 answer
  • A rectangle has perimeter 92 cm and length 39 cm. What is its width?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!