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
Lady bird [3.3K]
3 years ago
6

Suppose that the probabilities of a customer purchasing​ 0, 1, or 2 books at a book store are 0.2​, 0.3​, and 0.5​, respectively

. What is the expected number of books a customer will​ purchase?
Mathematics
1 answer:
svetlana [45]3 years ago
3 0

Answer:

Expectation number of books a customer will​ purchase  =  1.3

Step-by-step explanation:

x     :​ 0      1              2

p(x) :0.2​,  0.3​, and 0.5​

Expectation

E(X) = ∑x P(x)

      = 0 X 0.2 +1 X 0.3+ 2 X 0.5

     = 1.3

Expectation  E(X) =  1.3

Expectation number of books a customer will​ purchase  =  1.3

You might be interested in
Let f be a function such that f(x)=2x-4 is defined on the domain.2 is less than or equal to x and x is lss than or equal to 6. T
STALIN [3.7K]
F(x) = 2x - 4
f(2 ≤ x) = 2(2 ≤ x) - 4
f(x ≥ 2) = 2(x ≥ 2) - 4
f(x ≥ 2) = 2(x) ≥ 2(2) - 4
f(x ≥ 2) = 2x ≥ 4 - 4
f(x ≥ 2) = 2x ≥ 0
f(x ≥ 2) = x ≥ 0

f(x) = 2x - 4
f(x ≤ 6) = 2(x ≤ 6) - 4
f(x ≤ 6) = 2(x) ≤ 2(6) - 4
f(x ≤ 6) = 2x ≤ 12 - 4
f(x ≤ 6) = 2x ≤ 8
f(x ≤ 6) = x ≤ 4
8 0
3 years ago
Read 2 more answers
Can anyone help me out
Verizon [17]

Answer:

6 is the correct answer

Step-by-step explanation:

4*2=8

3*2=6

x=6

7 0
3 years ago
What is the value of x? show work
Alona [7]
2x+38=180
2x=142 (or x+x=142 from which 2x=142)
x=71 

The unknown angles are each 71

You know this answer is logical as, since two sides are 21 it hints that we are looking at an equilateral triangle, which means two of its angles will be the same
7 0
3 years ago
write the numeral that means the same as "three hundred fifty-two billion, six hundred thirty- five million"
sammy [17]

Answer:

352,635,000

Step-by-step explanation:

7 0
3 years ago
total of 342 tickets were sold for school play. They were either adults tickets or student tickets. The number of student ticket
Kazeer [188]

Answer:

684 I think ?!

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the slope<br> A. Undefined <br> B. 0
    10·1 answer
  • What partial products can you use to find how much 6 bags of cat food will cost
    11·1 answer
  • If B=D=37, find C so that quadrilateral ABCD is a parallelogram.
    15·1 answer
  • In how many ways can 5 students be seated in a row of 5 chairs if jack insists on sitting in the first chair
    6·1 answer
  • Help meeee im stuck on this my mom wont let me be wihout doing hw
    6·2 answers
  • Which interval is the solution set to 0.35x - 4.8 &lt; 5.2 -0.9x?
    7·2 answers
  • When Maggie hooks her dog up to a rope that is staked in the yard, the dog can walk a distance of about 76 feet along the circum
    13·2 answers
  • ILL GIVE BRAINLIEST IF ITS RIGHT
    9·1 answer
  • What is the answer i really need help
    12·1 answer
  • The estimated populations of two different countries in 2030 are shown in the table. What is the difference between the estimate
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!