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marysya [2.9K]
3 years ago
8

Let X represent the time it takes from when someone enters the line for a roller coaster until they exit on the other side. Cons

ider the probability model defined by the cumulative distribution function given below.0 x < 3F(x) = (x-3)/1.13 3 < x < 4.131 x > 4.13What is E(X)? Give your answer to three decimal places.What is the value c such that P(X < c) = 0.75? Give your answer to four decimal places.What is the probability that X falls within 0.28 minutes of its mean? Give your answer to four decimal places.

Mathematics
1 answer:
elena55 [62]3 years ago
8 0

Answer:

Step-by-step explanation:

The detailed step by step calculation using the probability density function approach is as shown in the attached file.

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A new computer can complete a complex biochemistry calculation in 7 hours less than an older-model computer. Working together, t
Alchen [17]
The rate a computer works is 1/time. Working together, you add the rates.
Let new computer be x, old computer be y.
x = y - 7

\frac{1}{x} + \frac{1}{y} = \frac{1}{13} \\  \\ \frac{1}{y-7}+\frac{1}{y} = \frac{1}{13} \\  \\ \frac{2y-7}{y(y-7)} = \frac{1}{13} \\  \\ y(y-7) = 13(2y-7) \\  \\ y^2-33y+91 = 0 \\  \\ y = 29.96 \\  \\ x = y-7 = 29.96-7 = 22.96
Rounded to nearest tenth gives:
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6 0
3 years ago
Part D ? Question Suppose the cylindrical water tank has a radius of 12 feet. Use this information and the equation modeling the
Wittaler [7]

The volume of the cylindrical water tank that has a length of 20 feet and a radius of 12 feet is about <u>9,048</u> cubic feet.

The correct option is option <em>d</em>;

d. 9,048

<h3>What is the volume of a solid?</h3>

The volume of a solid indicates the amount of space the solid takes at a location.

The formula for finding the volume of the cylindrical tank is presented as follows;

<em>V</em> = π·r²·L

Where;

r = The radius of the tank

L = The length of the tank

From a similar question on the website, we have;

The length of the tank, <em>L</em> = 20 feet

Therefore;

The volume of the tank, <em>V</em> = π × 12² × 20 ≈ 9048

  • The volume of the water tank is about <u>9,048</u> cubic feet

Learn mort about finding the volume of a solid here:

brainly.com/question/23725200

# SPJ1

8 0
1 year ago
A small town has two local high schools. High School A currently has 800 students and is projected to grow by 55 students each y
Neko [114]

Answer:

40

Step-by-step explanation:

6 0
2 years ago
Help please!! <br><br> angle 1 + angle 2 = ?<br> angle 7 + angle 8 = ?<br> angle 1 + angle 6 = ?
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Answer:

angle 1 + angle 2 = ∠DEB

angle 7 + angle 8 = ∠NEG

angle 1 + angle 6 = ∠NEA

6 0
2 years ago
How many pizzas were shared
kifflom [539]

The Correct Answer Is...

<u><em>D. 4 pizzas divided among 3 people.</em></u>

Any Questions? Comment Below!

<u><em>-AnonymousGiantsFan</em></u>

6 0
3 years ago
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