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
Contact [7]
3 years ago
12

The phone lines to an airline reservation system are occupied 45% of the time. Assume that the events that the lines are occupie

d on successive calls are independent. Assume that eight calls are placed to the airline.(a) What is the probability that for exactly two calls the lines are occupied
Mathematics
1 answer:
dimaraw [331]3 years ago
7 0

Answer:

0.1569 = 15.69%

Step-by-step explanation:

If eight calls were placed, and we need to know the probability of exactly two calls were occupied, we need to calculate a combination of 8 choose 2 (all the combinations of 2 occupied calls in the 8 total calls), and multiply by the probability of each case in the 8 calls (2 cases occupied and 6 cases not occupied):

P(8,2) = C(8,2) * p(occupied)^2 * p(not_occupied)^6

P(8,2) = (8*7/2) * (0.45)^2 * (0.55)^6

P(8,2) = 28 * 0.2025 * 0.02768 = 0.1569 = 15.69%

You might be interested in
Which is the independant variable and which is the dependant variable?
Daniel [21]

Answer:

C is independent m is dependent.

Step-by-step explanation:

The money is made based on the number cupcakes that are sold.

5 0
3 years ago
Read 2 more answers
PLEASE HELP (only if you know what you are doing )
KiRa [710]

Answer:

1. 3     2. 22     3. 0

Step-by-step explanation:

First Box: Jada only has <u>$15</u> dollars she can spend

If she chooses to buy 6 individual songs that would cost her $3.

because each individual song cost $0.50 so (6 times 0.5= 3)

Since Jada only has $15 we need to subtract 3 from 15 to find out how much money she has left. So, 15-3=12. Jada has $12 left

An album cost $4 dollars each so Jada can only buy 3 albums with $12 because 12 divided 4 is 3.

Answer to first box: 3

Second Box:  Jada only has <u>$15</u> dollars she can spend

If she chooses to buy 1 album that would cost her $4.

because each individual song cost $4 so (4 times 1= 4)

Since Jada only has $15 we need to subtract 4 from 15 to find out how much money she has left. So, 15-4=11. Jada has $11 left

An individual song cost $0.50 dollars each so Jada can only buy 22 individual songs with $11 because 11 divided by 0.5=22.

Answer to second box: 22

Third Box: Jada only has <u>$15</u> dollars she can spend

If she chooses to buy 30 individual songs that would cost her $15.

because each individual song cost $0.50 so (30 times 0.5= 15)

Since Jada only has $15 we need to subtract 15 from 15 to find out how much money she has left. So, 15-15=0. Jada has $0 left

An album cost $4 dollars each so Jada can only buy 0 albums with $0 because 0 divided 4 is 0.

Answer to third box: 0

4 0
3 years ago
Read 2 more answers
Help please!!!<br><br> -6. {[-32 + 8 + (9 - 27] - 14} - (-2)
12345 [234]
Well, the answer is 334.
4 0
3 years ago
C=2m+d solve for m plz
Pavel [41]
Isolate the m, go backwards for PEMDAS.

C = 2m + d
C (-d) = 2m + d (-d)
C - d = 2m
(C - d)/2 = 2m/2
m = (C - d)/2

m = (C - d)/2 is your answer

hope this helps
 
7 0
3 years ago
What is the sum of 5 feet 9 inches and 12 feet 3 inches
mestny [16]
5 ft + 12 ft = 17 ft 

<span>9 in + 3 in = 12 in = 1 ft </span>

<span>17 ft + 1 ft = 18 ft
</span>hope this helps
6 0
3 years ago
Read 2 more answers
Other questions:
  • Choose the equation that represents the graph below
    8·1 answer
  • What is 3/4 divided by 1/2
    10·2 answers
  • Question 1 (1 point)<br> Evaluate if t=-2, x=3 and z=5<br> 4z + 3x -t
    13·1 answer
  • What are the domain and range
    14·2 answers
  • COME ON ITS 1 QUESTION FOR 50 POINTS!
    10·2 answers
  • Need Help Please Answer asap anyone
    14·1 answer
  • The quantities x and y are oropottional find the contast of proportional of(r) y=rx ​
    15·1 answer
  • A company has a manufacturing plant that is producing quality jackets. They find that in order to produce 150 jackets in a month
    13·1 answer
  • What is 11/21 as a decimal rounded to a 3 decimal places?
    12·1 answer
  • Samuel was preparing for the triathlon. He did 3 activities every morning: Ran for 30 minutes, covering 4.5 miles. Swam for 20 m
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!