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
Novay_Z [31]
3 years ago
12

64% of US adults have very little confidence in newspapers you randomly select 10 US adults find the probability that the number

of US adults who have very little confidence in newspapers is a exactly 5 be at least six and C less than four
Mathematics
1 answer:
9966 [12]3 years ago
5 0

Answer:

A) 0.1636

B) 0.7292

C) 0.0305

Step-by-step explanation:

This is a binomial probability distribution question that follows;

P(X = x) = nCx × p^(x) × q^(n - x)

In this case, p = 64% = 0.64

q = 1 - p = 1 - 0.64 = 0.36

Thus;

A) P(exactly 5) = P(5) = 10C5 × 0.64^(5) × 0.36^(10 - 5) = 0.1636

B) P(at least 6) = P(x ≥ 6) = P(6) + P(7) + P(8) + P(9) + P(10)

P(6) = 10C6 × (0.64^(6)) × (0.36^(10 - 6)) = 0.2424

P(7) = 10C7 × (0.64^(7)) × (0.36^(10 - 7)) = 0.2462

P(8) = 10C8 × (0.64^(8)) × (0.36^(10 - 8)) = 0.1642

P(9) = 10C9 × (0.64^(9)) × (0.36^(10 - 9)) = 0.0649

P(10) = 10C10 × (0.64^(10)) × (0.36^(10 - 10)) = 0.0115

Thus;

P(x ≥ 6) = 0.2424 + 0.2462 + 0.1642 + 0.0649 + 0.0115

P(x ≥ 6) = 0.7292

C) P(x < 4) = P(0) + P(1) + P(2) + P(3)

From online binomial probability calculator, we have;

P(x < 4) = 0.0305

You might be interested in
A bag of potatoes weighs 2 1/2 pounds. How much would 3 1/3 bags weigh?
STALIN [3.7K]
The answer is 8.33333333333333333...
7 0
3 years ago
Read 2 more answers
Between which pair of decimals does the square root of 13 fall between
creativ13 [48]
Since 3 squared is 9 and 4 squared is 16, the square root of 13 will fall somewhere between 3 and 4
8 0
3 years ago
Which congruence statement is true.!?
andreyandreev [35.5K]

Step-by-step explanation:

\\ \triangle ABC \cong \triangle DFE \\

6 0
3 years ago
8. Solve the system using elimination.<br> 3x - 4y = 9<br> - 3x + 2y = 9
olga nikolaevna [1]

Answer:

3x−4y=9 −3x+2y=9

Add these equations to eliminate x: −2y=18

Then solve−2y=18

for y: −2y=18 −2y −2 = 18 −2 (Divide both sides by -2)

y=−9

Now that we've found y let's plug it back in to solve for x.

Write down an original equation: 3x−4y=9

Substitute−9for y in 3x−4y=9: 3x−(4)(−9)=9

3x+36=9(Simplify both sides of the equation)

3x+36+−36=9+−36(Add -36 to both sides)

3x=−27 3x 3 = −27 3 (Divide both sides by 3) x=−9

Answer: x=−9 and y=−9

Hope This Helps!!!

4 0
3 years ago
4 times what number equals 204
skelet666 [1.2K]
4 x a =204

a= 204 :4

a=51
8 0
3 years ago
Read 2 more answers
Other questions:
  • Rachel has 30 pounds of a mixture of candy that sells for $1.00/lb. If lollipops sell for $0.95/lb and caramel candies sell for
    13·1 answer
  • I've been looking in the study guide but can't find how to solve it
    7·2 answers
  • Please solve...Thanks
    9·1 answer
  • Emma took a taxi from the airport to her house. She paid a flat fee of $ 5 plus $3.70 per mile. The fare came to $ 42 . For Emma
    9·1 answer
  • What percentage is fourty cents out of a dollar
    10·2 answers
  • Solve <br> 4x+3y=-2<br> 3x + 5y = 15
    14·1 answer
  • Liane is sewing new curtains for her bedroom She Bought 3 yards of fabric Her total cost was $12. What was her cost per yard?
    12·1 answer
  • The square root of a whole number is between 600 and 700. The whole number must be between:
    14·1 answer
  • Solve.<br> 4. Find the value of x in the diagram at the right.
    8·1 answer
  • The value of the power is
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!