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
ella [17]
3 years ago
8

During the period of time that a local university takes phone-in registrations, calls come in at the rate of one every two minut

es.a. What is the expected number of calls in one hour?b. What is the probability of three calls in five minutes?c. What is the probability of no calls in a five-minute period?
Mathematics
1 answer:
nikklg [1K]3 years ago
3 0

Answer:

Step-by-step explanation:

This is a poisson distribution. Let x be a random representing the number of calls in a given time interval.

a) the expected number of calls in one hour is the same as the mean score in 60 minutes. Thus,

Mean score = 60/2 = 30 calls

b) The interval of interest is 5 minutes.

µ = 5/2 = 2.5

We want to determine P(x = 3)

Using the Poisson probability calculator,

P(x = 3) = 0.21

c) µ = 5/2 = 2.5

We want to determine P(x = 0)

Using the Poisson probability calculator,

P(x = 0) = 0.08

You might be interested in
The following table shows the length and width of two rectangles:
faltersainse [42]
The perimeter of these can be found by adding length and width and then multiplying by two. 

Rectangle A: (with all of the variables already doubled)
2x + 16 + 2x - 2 
2x + 2x + 16 - 2
4x + 14
So rectangle A's perimeter is 4x + 14.

Rectangle B: (Still with all the variables already doubled)
8x + 10 + 6x - 4
8x + 6x + 10 - 4
14x + 6
So rectangle B's perimeter is 14x + 6

And now to subtract the two.
(7x + 3) - (4x + 14)
14x + 6 - 4x - 14
14x - 4x + 6 - 14
10x - 8

So it would be C.
5 0
3 years ago
Please answer this friends I am stuck ?
goblinko [34]

Answer:

<u>10°C average temperature</u>

Step-by-step explanation:

Average Temperature = Lowest + 17

= -7 + 17

= 17 - 7

= <u>10°C average temperature</u>

4 0
2 years ago
If there is a 4:6 ratio of dogs to cats in the store. What percentage of the store are dogs?
Liono4ka [1.6K]
60% of the store is dogs.
6 0
2 years ago
Read 2 more answers
Changing this into General Form (Ax + By + C = 0)<br><br> x = -9 {2 ≤ y ≤ 6}
ahrayia [7]

Answer:

0x8y

Step-by-step explanation:

x is negative so i turned it into a negative number b, y is - so 8 and o is slope

4 0
3 years ago
Mrs. Walters drove 360 miles on 25 gallons of gas. Mr. Walters drove 480 miles on 32 gallons of gas.
Temka [501]

Answer:

Mr.Walters car can go 15 miles on one gallon of gas.

Step-by-step explanation:

To find this, you first want to put it into a ratio.

480:32

Next, you want to divide.

480/32

After you divide, you get 15. That tells you that you get 15 miles off of one gallon of gas.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Whay 3 tims 99 Pls help confused thanks
    13·2 answers
  • Easy points i just have a question. Is this picture showing up?
    6·2 answers
  • Which phrase describes an unknown or changeable quantity?
    15·2 answers
  • At an after christmas sale all christmas decorations were 3/4 off how much would you save on a $16 tree ornament
    13·2 answers
  • Jenny has been saving quarters in a piggy bank since she was born. She currently has 192 quarters in her piggy bank. She decides
    9·1 answer
  • Select all expressions that represent the area of the given triangle
    9·1 answer
  • A studio is buying four (4) MP3 players for $129.55 each. Estimate the least number of $100 bills needed to buy the MP3 players.
    11·2 answers
  • Pleaseee ANWSER ASAP!!!!
    5·1 answer
  • HELP PLEASE! for 20 points
    11·1 answer
  • Can anbody help? I need this to pass my exam
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!