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
viva [34]
3 years ago
5

Pleeaaaase hellllpppp asap

Mathematics
2 answers:
muminat3 years ago
7 0

Answer:

Option B

Step-by-step explanation:

the mean is the sum of each value of P(x) multiply for x

Mean= 23x0.16 + 25x0.09 + (26x0.18) + (31x0.12)+ (34x0.24) + (38x0.21)

Mean= 30.47

Anna [14]3 years ago
6 0

Answer:

B. 30.47

Step-by-step explanation:

The mean discrete random variable tells us the weighted average of the possible values given of a random variable. It shows the expected average outcome of observations. It's like getting the weighted mean. The expected value of X can be computed using the formula:

\mu_{x}=x_1p_1+x_2p_2+x_3p_3...+x_kp_k\\\\=\Sigma x_ip_i

Using the data given in your problem, just pair up the x and P(x) accordingly and get the sum.

\mu_{x}=x_1p_1+x_2p_2+x_3p_3+x_4p_4+x_5p_5+x_6p_6\\\\\mu_{x}=(23\times 0.16) + (25\times 0.09) + (26\times 0.18) + (31\times 0.12) + (34\times 0.24) + (38\times 0.21)\\\\\mu_{x} = 30.47

You might be interested in
Simplify (x+4)^2 how is this simplified
Juliette [100K]

Is known that

(a + b)² = a² + 2.a.b + b²

So:

(x + 4)² = x² + 2.x.4 + 4² = x² + 8x + 16

5 0
2 years ago
Read 2 more answers
Janna drank 0.7 liter of water before soccer practice and 0.70 liter of water after practice compare the two decimals using grea
maria [59]
0.7 Liters and 0.70 Liters are the same amount.

You can think of them as fractions:  7/10 and 70/100.  Both of these mean the same.  7/10 is the simplest form of the number.

When you put zeros to the right of any number that is to the right of the decimal point, it will not change the value of the number.

0.7 L = 0.70 L
5 0
3 years ago
AP calculus HW Need help on #61
Yuki888 [10]
Expanding the limit, we get (x^2+2x∆x+∆x^2-2x-2∆x+1-x^2+2x-1)/<span>∆x

Crossing the 1s , the 2xs, and the x^2s out, we get

(2x</span>∆x+∆x^2-2∆x)/<span>∆x

Dividing the </span><span>∆x, we get 
2x+</span><span>∆x-2. 

Making the limit of </span><span>∆x=0, we get 2x-2.</span>
7 0
3 years ago
Let f(x)=-x-7 find f(-6)
pashok25 [27]

Answer:

x=6f-7 is the correct answer.

7 0
3 years ago
Solve for x and explain the steps in your answer. Please Help :/
Solnce55 [7]
I believe the answer is -25/6 :)
7 0
3 years ago
Other questions:
  • In a random sample of cars driven at low altitudes, of them exceeded a standard of grams of particulate pollution per gallon of
    13·1 answer
  • What values for θ (0≤θ≤2π) θ ( 0 ≤ θ ≤ 2 π ) satisfy the equation: cos(θ) − tan(θ)cos(θ) = 0
    15·1 answer
  • Help me please,show ur work,Thanks
    13·1 answer
  • What’s the answer I’m confused
    14·1 answer
  • Please help! Hi, I'm stuck on a part of this question, we have to solve using Gauss Jordan Elimination: A corporation wants to l
    11·1 answer
  • Which of the following are true statements about any regular polygon? Check all that apply
    6·2 answers
  • Please help me! Question: What is the median of the data set? 100,102,103,106,109
    11·2 answers
  • Find the coordinates of the image<br> Ry=-1(p)<br> The image is _____?
    5·1 answer
  • In a store parking lot, 60% of the vehicles are white. If there are 24 white vehicles, how many vehicles are in the parking lot?
    15·1 answer
  • You get 20 point if you answer
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!