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
spayn [35]
3 years ago
8

n a survey of 331 customers, 66 say that service is poor. You select two customers without replacement to get more information o

n their satisfaction. What is the probability that both say service is poor?
Mathematics
1 answer:
yaroslaw [1]3 years ago
4 0

Answer:

3.93% probability that both say service is poor

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The customers are chosen without replacement, and the order in which they are chosen is not important. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

What is the probability that both say service is poor?

Desired outcomes:

Two saying it is poor, from a set of 66. So

D = C_{66,2} = \frac{66!}{2!(66-2)!} = 2145

Total outcomes:

Two customers from a set of 331. So

T = C_{331,2} = \frac{331!}{2!(331-2)!} = 54615

Probability:

p = \frac{D}{T} = \frac{2145}{54615} = 0.0393

3.93% probability that both say service is poor

You might be interested in
The graph below shows the relationship between test grades and shoe sizes of the students in Dexter's class.
FrozenT [24]
Yeah that is correct so yeah you are right I don’t know any more information that I could give you but I’m pretty sure you just said it right so yeah
4 0
3 years ago
Read 2 more answers
Alan hikes 4.5 miles in 3 hours. Determine whether quantities (distance and time) vary directly or inversely and find the consta
Mrac [35]
V = x/t = 4.5 mil / 3 h = 1.5 mph
Since, v = 1.5 mph (or we can say that v is constant), distance and time vary directly and the constant of variation is 1.5 mph.
3 0
3 years ago
Which statements are true regarding undefinable terms in geometry?All that apply.
valentinak56 [21]
D.A plane consist of an infinite set of lines.
8 0
4 years ago
6x – 3y = 5<br>y – 2x= 8​
noname [10]

Answer:

PA GEN SOLISYON --> "NO SOLUTION"

Step-by-step explanation:

Whether you multiply the top equation by ⅓ to make "-y" and "2x", or multiply the bottom equation by 3 to make "3y" and "-6x", you will see that 9⅓ ≠ 0, or 24 ≠ 0, therefore the result is "NO SOLUTION".

6 0
3 years ago
What will be the total cost in dollars<br> if Javier sends 70 text messages?
Vanyuwa [196]

Answer:how much is one message?

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Enter a fraction that makes the equation below true. 3/10 divided by what equals 2/5?
    11·2 answers
  • Solve and graph
    10·1 answer
  • Samuel and Christopher go to the movie theater and purchase refreshments for their friends.
    5·1 answer
  • Use set builder notation for {10,20,30,40...}
    5·1 answer
  • A restaurant has three locations, all about the same size, within the same city. The graph shows last mon's sales figures for on
    11·1 answer
  • Plss help i’ll give brainliest thank you!
    14·1 answer
  • PLEASE HELP ILL GIVE BRAINLEST
    7·1 answer
  • Find the nth term of 4,8,14,22
    5·1 answer
  • Find the equation of the line through the points (3,-4) and (0,2) answer in slope intercept form
    11·1 answer
  • An oil tank is being filled at a constant rate. The depth of the oil is a function of the number of minutes the tank has been fi
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!