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
zysi [14]
3 years ago
11

Suppose the discrete random variable X has the probability distribution below:

Mathematics
1 answer:
Talja [164]3 years ago
4 0

(a) P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0.11 + 0.52 + 0.19 = 0.82

(b) P(X ≥ 1) = P(X = 1) + P(X = 2) + P(X = 3) + P(X = 4) = 0.52 + 0.19 + 0.12 + 0.06 = 0.89

(c) µ = 0×0.11 + 1×0.52 + 2×0.19 + 3×0.12 + 4×0.06 = 1.5

(d) σ² = (0²×0.11 + 1²×0.52 + 2²×0.19 + 3²×0.12 + 4²×0.06) - µ² = 1.07

σ = √(σ²) ≈ 1.03

You might be interested in
A rectangular prism with dimensions of 4 feet by 5 feet by 6 feet
frosja888 [35]

what is the height of it

and what do you want me to find?

4 0
3 years ago
Y=x+12 please answer quickly and plus i need 20 characters<br>​
snow_tiger [21]

Answer:

I do not fully know your question, but your slope is m=1, your y-intercept is 12, and your x-intercept would be (-12,0). I hope this helps. Try to reconstruct your question next time.

5 0
3 years ago
Determine whether each quadrilateral is a parallelogram. Justify your answer. Yes/No? Reason... opposite side congruent, opposit
Alex_Xolod [135]

Answer:

Yes! The given quadrilateral represents Parallelogram.

Reason: The given quadrilateral has opposite sides congruent.

Step-by-step explanation:

Given the quadrilateral with the four vertices.

  • Now in order to determine whether the given quadrilateral is a parallelogram or not, we need to check whether the opposite sides are congruent or not.

  • It is clear that the given quadrilateral has opposite sides congruent.

Therefore, the given quadrilateral represents Parallelogram.

Hence,

Yes! The given quadrilateral represents Parallelogram.

Reason: The given quadrilateral has opposite sides congruent.

7 0
3 years ago
Solve the system of linear equations. 3x−2y=1 9x−6y=3
irakobra [83]
Get the y by itself

-2y= -3x + 1

Divide -2 to everything

y= 3/2x - 1/2


Other equation (get y by itself)

-6y= -9x + 3
y=3/2x - 1/2

Use substitution

3/2x-1/2=3/2-1/2

0=0

All real numbers (any value of x makes the equation true)
8 0
3 years ago
Sharon paid 14.40 for 3 1/4 yards of fabric. how much did sharon pay per yard of fabric.
OLEGan [10]

Answer:

4.68

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Two factory plants are making TV panels. Yesterday, Plant A produced 3 times as many panels as Plant B. Three percent of the pan
    12·1 answer
  • Nia built the following graph to model a probe flying close to Mars and then on to outer space. Which of the following domains i
    12·1 answer
  • ¿Cómo se escribe una y media, media en números?
    6·2 answers
  • Which set of absolute values is compared correctly? A. |-10| |-10| &gt; |-12| &gt; |17| C. |10| &gt; |-15| &gt; |-5| &gt; |2| D.
    9·1 answer
  • The equivalent expression for (x-6)(4)
    5·1 answer
  • Question
    9·1 answer
  • HELP ASAP PLEASE! ALSO I CANT OPEN LINKS AND IF U SEND THEM IM REPORTING U TY AND HAVE A GOOD DAY
    8·1 answer
  • What is
    11·2 answers
  • Which statement does not describe the tangent function?
    5·2 answers
  • there are 15 pieces of fruit in a bowl and 6 are them are apples. what precentage of pieces of fruit in the bowl are apples
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!