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Vedmedyk [2.9K]
2 years ago
7

10. The pie graph above represents a key element of which of the

Advanced Placement (AP)
1 answer:
PIT_PIT [208]2 years ago
4 0

Answer:

A) Fiscal policy

Explanation:

mark me brainliest!!

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AP STATISTIC
Svet_ta [14]

The mean for the total cost of the two items is 82. The standard deviation of the total cost of the two items is 14.14214. The probability of finding two random items at this auction with a total price of less than $80 is 0.44377.

<h3>What is a random variable?</h3>

A random variable is a variable with an undetermined value that gives values to each of the results of a statistical experiment.

From the parameters given:

  • Let us assume that X represents the random variable that connotes the price of the item during the large auction.

Given that:

  • X is normally distributed with a mean of $41 and
  • A standard deviation of $10

X \sim N(μ, σ²)

X \sim N(41, 10²)

Suppose we made an assumption that Y should denote the total cost of items:

i.e.

Y = X₁ + X₂

Here;

\mathbf{X_i \sim N(41, 10^2)} \\ \\ \mathbf{E(Y) = E(X_1+X_2) } \\ \\ \mathbf{E(Y) = 41 + 41 } \\ \\  \mathbf{E(Y) = 82}

The variance of (Y) is:

\mathbf{Var (Y) = Var(X_1+X_2) = Var (X_1) + Var(X_2) } \\ \\\mathbf{= 10^2+ 10^2} \\ \\ \mathbf{=200}

\mathbf{Standard \ deviation \ SD (Y) = \sqrt{200} }

= 14.14214

The probability of finding the two random items at the auction with a total price of less than $80 can be computed as:

P(Y < 80)  

Since the data is normally distributed,

\mathbf{=P\Big(Z < \dfrac{x -\mu}{\sigma}\Big)}

\mathbf{=P\Big(Z < \dfrac{80 -82}{14.14214}\Big)}

\mathbf{=P\Big(Z < -0.1414213\Big)}

Recall that:

P(Z < -z) = P(Z > z)

Hence;

= P (Z  > 0.1414213)

= 1 - P(Z ≤  0.1414213)

From the Z tables, the value of Z at 0.1414213 is 0.55623;

=  1 -  0.55623

= 0.44377

Therefore, we can conclude that the probability of finding two random items at this auction with a total price of less than $80 is 0.44377.

Learn more about random variables in probability here:

brainly.com/question/15246027

7 0
2 years ago
Pls hurry I need help
Nikitich [7]

Answer:

you should take notes notes are very important while setting goals for a research plan

3 0
3 years ago
What show is this?
lana [24]

Answer:

are you really sssniperwolf

Explanation:

6 0
3 years ago
PLEASE HELP ME 100 POINTS ON THE LINE!!!! AG QUESTIONS! LMK IF YOU CAN HELP ME WITH ANY MORE TYSM!
sp2606 [1]

Answer: <em>The texture of soil determines soil water-holding capacity, permeability, and soil workability. Sand, silt, clay, and organic matter particles in a soil combine with one another to form larger particles. Soil structure is the arrangement of the soil particles into aggregates of various sizes and shapes. THEREFORE THE ANSWER TO THE FIRST ONE IS A) SOIL TEXTURE. </em>

<em />

<em />

<em>FOR THE SECOND QUESTION THE ANSWER IS B) CRUMBY.</em>

<em />

<em>FOR THE THIRD QUESTION THE ANSWER IS D) Water carries nutrients below plant roots where they are unavailable to plants.</em>

<em />

<em>FOR THE FOURTH QUESTION THE ANSWER IS D) Soil pH does not affect the availability of nutrients</em>

<em />

<em />

<em>FOR THE FIFTH QUESTION THE ANSWER IS C) Soil which contains relatively equivalent portions of sand, silt and clay</em>

Explanation: Good luck you got this!!! :))

8 0
3 years ago
Explain how digital communications are affecting many aspects of
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Digital Communications has provided benefits to relationships especially long distance relationships. It helps people feel connected with each other. Through the use of digital communications such as Facetime or Zoom, it gives oppurtunity to people whom you feel close to interact with you through the screen. long distance relationships tends to work because of digital communications , interacting online has been a lot more easier.

Sorry if its short but i couldnt think of anything feel free to add more things if you’d like
5 0
3 years ago
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