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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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find the curved surface area and total surface area of a right circular cylinder whose height is 15 cm and the radius of the bas
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Answer:

CSA = 660cm^2 --- Curved Surface Area

TSA = 968cm^2  --- Total Surface Area

Step-by-step explanation:

Given

Shape: Cylinder

h = 15 -- height

r = 7 --- radius

Solving (a): The curved surface area (CSA)

This is calculated as:

CSA = 2\pi rh

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CSA = 2 * \frac{22}{7} * 7 * 15

CSA = 2 * 22* 15

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Solving (b): The total surface area (TSA)

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