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
andrew-mc [135]
3 years ago
14

An important part of customer service responsibilities of a cable company relates to the speed with which trouble in service can

be repaired. Historically, the data show that the likelihood is 0.75 that troubles in a residential service can be repaired on the same day. For the first 5 troubles reported on a given day, what is the probability that fewer than 2 troubles will be repaired on the same day?
Mathematics
2 answers:
fenix001 [56]3 years ago
5 0
The answer to your question is
D.  .2373


Hope this helps

Evgesh-ka [11]3 years ago
5 0

Answer:

The probability that fewer than 2 troubles will be repaired on the same day is:

0.015576

Step-by-step explanation:

We have to use the Binomial function is n=order to calculate the probability of r successes out of the n-events.

We know that the probability of r success out of the n-events is given by:

P(X=r\ successes)=n_C_r\cdot p^r\cdot (1-p)^{n-r}

where p is the probability of an success.

Here we have:

n=5 and r=0,1.

since we are asked to find the probability that fewer than 2 troubles will be repaired on the same day.

i.e we have to find:

P(X

Also p=0.75 ( since, likelihood is 0.75 that troubles in a residential service can be repaired on the same day )

Hence,

P(X=0)=5_C_0\cdot (0.75)^{0}\cdot (1-0.75)^{5-0}\\\\P(X=0)=1\cdot 1\cdot (0.25)^5\\\\P(X=0)=0.000976

and

P(X=1)=5_C_1\cdot (0.75)^{1}\cdot (0.25)^{5-1}\\\\P(X=1)=5\cdot (0.75)\cdot (0.25)^4\\\\P(X=1)=0.0146

Hence,

P(X

Hence,  the probability that fewer than 2 troubles will be repaired on the same day is:

0.015576

You might be interested in
Copy the expressions which are polynomials. Give reasons why the remaining are
kupik [55]

Answer: a and c are polynomials, b is not.

Step-by-step explanation:

A polynomial p(x) is written as:

p(x) = aₙ*xⁿ + ... + a₂*x² + a₁*x¹ + a₀*x⁰

where x is the variable, and the numbers aₙ, aₙ₋₁, ..., a₁, a₀ are the coefficients of the polynomial, such that aₙ is the leading coefficient, and the value of n (always a natural number) is the degree of the polynomial.

Notice that the powers need to be always natural numbers.

Now, let's analyze the options:

a) 3*x - 2

We can rewrite this as:

3*x¹ - 2*x⁰

Then this is a polynomial.

b) p² + 1/p    (in this case the variable is p)

the second term can be written as:

1/p = p⁻¹

Then we have a term with a negative power of p, this means that this is not a polynomial.

c) 3*y² - 2*y/3 + 1

Same as in the first case, we can rewrite this as:

3*y² - (2/3)*y¹ + 1*y⁰

This is a polynomial.

8 0
3 years ago
Eddie has saved up $45 to purchase a new camera from the local store. The sales tax in his county is 7% of the sticker price. Wr
NARA [144]


 tax gets added to the price of the camera

 so the equation is:

x + 0.07x = 45; x = $42.06

3 0
3 years ago
A red blood cell is 0.000007 m in diameter. There are about 20,000,000,000,000 red blood cells in a 125 lb person. if all the re
AysviL [449]
Multiply 0.000007 (7x10ˆ2) by 20,000,000,000,000 (2x10ˆ13) 
<span>The answer is 140,000,000 (1.4x10ˆ8) meters</span>
5 0
3 years ago
HELP ME ASAP PLEASE SOMEONE :(
Anton [14]

Answer:

60

Step-by-step explanation:

find the area of the missing rectangle:

18-12=6

4-2=2

6 * 2= 12

find the area of the rectangle:

(18*4)-12=60

4 0
2 years ago
Please Help me!!!<br><br> The question is: <br> Which graph shows the solution to y &gt; x – 8?
FinnZ [79.3K]

Answer:

the answer is B

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Fred is a server at a restaurant. On average, he can serve 6 tables per hour. Fred earns between $3.08 and $5.23 in gratuity per
    6·1 answer
  • The manager of a local nightclub has recently surveyed a random sample of 280 customers of the club. She would now like to deter
    9·1 answer
  • A tile pattern on a wall is made up of two identical parallelograms and three identical triangles. What is the area of the tile
    6·2 answers
  • Let g(x) = 2x and h(x)= x^2 -4. find (g o h)(0)
    5·1 answer
  • 12/7 = k/8 Solve for k
    11·1 answer
  • 9<br> Find mZWVT<br> T<br> 35x-2<br> U<br> 93 °<br> W<br> V<br> 7x + 5<br> mZWVT =
    13·1 answer
  • The temperature at noon was -30C.By 10.P.M. on the same day the temperature decreased by 5.50. What is the temperature at 10 P.M
    15·2 answers
  • Sarafina had 34 out of 99 hits when she was at bat during the soft ball season. What was her batting average? (use bar notation
    8·1 answer
  • Which ordered pair is a solution of the equation?<br> y=3x+5
    8·1 answer
  • The table shows the time it takes jessica to make rubber band bracelets using a loom. Based on the table how many bracelets can
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!