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
horsena [70]
2 years ago
9

The average number of Saturday night shootings is 5 a night. What’s the chance that there will be a need for exactly 3 shootings

this Saturday?
Mathematics
1 answer:
pishuonlain [190]2 years ago
5 0

Answer:

0.14

Step-by-step explanation:

Using the poisson probability relation :

P(x = x) = (λ^x * e^-λ) ÷ x!

From the question ; mean, λ = 5 ; x = 3

Hence,

P(x = 3) = (5^3 * e^-5) ÷ 3!

P(x = 3) = (125 * 0.0067379) / 6

P(x = 3) = 0.8422375 / 6

P(x = 3) = 0.140

You might be interested in
Harpreet, Sukhpreet and Komalpreet are three sisters. Sukhpreet is x years old. Harpreet is 3 years older than Sukhpreet. Komalp
Ira Lisetskai [31]

Answer:

12

Step-by-step explanation:

Givens

Harpreet        = x + 3

Sukhpreet     = x

Komalpreet   = 2*(x + 3)

Average Age = 15

Equation

[(x + 3) + x + 2*(x + 3) ] / 3 = 15                  Multiply both sides by 3

Solution

3 [(x + 3) + x + 2*(x + 3) ] / 3 = 15 * 3         Combine

 [(x + 3) + x + 2*(x + 3) ]       =   45             Remove the brackets

x + 3 + x + 2x + 6                 =   45             Combine like terms

4x + 9 = 45                                                 Subtract 9 from both sides

4x + 9 - 9 = 45 - 9                                       Combine

4x = 36                                                         Divide by 4

4x/4 = 36/4

x = 9

Answer

Harpreet is  x+ 3 = 9 + 3 = 12

3 0
2 years ago
2 is what percent of 12?​
REY [17]

Answer:

16.67

Step-by-step explanation:

sana po makatulong

5 0
2 years ago
What is the sum of twenty and thirty
bonufazy [111]
Fifty , 50 20+30=50, not sure if its asking much else

8 0
2 years ago
Read 2 more answers
Is -3x=15 a function
lutik1710 [3]
Yes because the answer would be

X=5
6 0
3 years ago
Is it possible to prove these triangles congruent by the HL Theorem?
aleksandr82 [10.1K]

since by the provided tickmarks WE ≅ ER, and QE ≅ ET, then both triangles are congruent by LL theorem, Leg Leg.


anyhow, since those legs are congruent, their hypotenuses must also be congruents, and we could use the HL theorem as well.

4 0
3 years ago
Read 2 more answers
Other questions:
  • To convert 0.73 hours into minutes which ratio would you multiply by. a 1 minute/ 60 hours
    14·1 answer
  • 4. Kay and Allen sell cell phones. Last month Kay sold 17 more cell phones than Allen. Together they both sold 117 cell phones.
    10·2 answers
  • Write a polynomial that represents the area of the square.
    11·2 answers
  • Why did the colonists fight the British?
    14·2 answers
  • Which statements about the function described by the table is true
    5·1 answer
  • Write an equation to represent the number of pages Jesse has read. Using x, the number of days Amir has been reading, write an e
    10·1 answer
  • 3. The yearly profits of a company is $5,000. The profits have been decreasing by 6% per year.
    6·1 answer
  • 20° + 2pº<br> 70°<br> p =<br> degrees
    14·2 answers
  • 7 a) The table shows the masses of the planets in our solar system.
    10·1 answer
  • A calendar shop has 3,500 calendars. Each rack can hold 500 calendars. How many racks does the store need to use?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!