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
34kurt
2 years ago
9

the probabilities of having 0,1,2,3, or 4 people waiting in line at a grocery store are shown in the probability distribution be

low. what is the expected number of people waiting in line, rounded to the nearest tenth?
Mathematics
1 answer:
makvit [3.9K]2 years ago
8 0

Answer:

1.4

Step-by-step explanation:

Given the probability distribution :

X _____ 0 ____1 ____ 2 ____ 3 ____4

P(x) _ 0.16 _ 0.41 _ 0.32 __ 0.09 __ 0.02

Expected number of people waiting in line :

E(X) = Σ(x * p(x))

E(X) = (0*0.16) + (1*0.41) + (2*0.32) + (3*0.09) + (4*0.02)

E(X) = 1.4

You might be interested in
Answer correctly for brainleist and 5 mark
notsponge [240]

Answer:

It is the last answer.

Step-by-step explanation:

If you graph this, there will be no point more negative than (-4/3, -5).

This means the x and y values must be greater than or equal to these values, as the fourth answer will show.

8 0
2 years ago
Please someone do this for me
nlexa [21]

Answer:

A = -12

B = -8

C = -4

Step-by-step explanation:

y=2x-8

x = -2

y=2(-2)-8=-4-8=-12

A = -12

x = 0

y = 2 (0)-8=-8

B = -8

x = 2

y = 2 (2) -8 = 4-8 = -4

C = -4

Hope this helps

8 0
2 years ago
Pleaseee helpppp I really need it now please
lozanna [386]

Answer:

c = 60

Step-by-step explanation:

A triangle = 180 degrees

180-(15+105)=c

c=60

5 0
2 years ago
Name four points in the figure
Kobotan [32]

-- ear lobe
-- knee
-- hip
-- elbow


7 0
3 years ago
Read 2 more answers
What causes global convection current to form
hoa [83]

Answer:

Hope this helped :)

Step-by-step explanation:

Convection flows structure in light of the fact that a warmed liquid grows, getting less thick. The less-thick warmed liquid ascents from the warmth source. ... For example, a hot radiator warms the air promptly around it. The air ascends toward the roof, pulling cooler air down from the roof into the radiator to be warmed.

4 0
2 years ago
Other questions:
  • 6glass of water each contained 300ml Andrew drank 2 liters of water how many drank together
    6·1 answer
  • What is 4.25 round to one decimal place
    5·2 answers
  • In the diagram, line segment CD is the perpendicular bisector of line segment AB, and E is a point not on either line that is on
    9·1 answer
  • In an average month, Jaden sends 200 texts and talks for 100 minutes. Give the cost for plan A and for plan B. Then tell which p
    9·1 answer
  • Which equation has a slope of 4 and a y intercept of -2
    13·1 answer
  • In one college, 67 students made the dean's list. If this was 33.5% of the student body, what was the total number of students i
    7·1 answer
  • The population of a small town was 3500 in 2005. The population increases by 4% annually. A. Write an exponential growth functio
    12·1 answer
  • B is inversely proportional to a When a = 4 , b = 6 Determine the value of b when a = 8
    13·1 answer
  • What is the value of the expression below when z = 2?<br> 5z^2+3z+7
    8·1 answer
  • Find the value of x and y<br> Option 1 <br> Option 2<br> Option 3<br> Option 4
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!