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Use the following information to answer the next ten exercises.A customer service representative must spend different amounts of time with each customer to resolve various concerns. The amount of time spent with each customer can be modeled by the following distribution: X~Exp(0.2)

State the probability density function.

Short Answer

Expert verified

The probability density function of the given expression isf(x)=0.2e-0.2x

Step by step solution

01

Definition

A probability distribution (the likelihood of a result) for a discrete random variable is defined by the Probability Density Function, which is a statistical expression.

02

Concept and Formula of Probability Density Function 

General form of Probability Density Function of Exponential Distribution is:

f(x)=me-mx

03

Finding the Probability Density Function 

The given Exponential Distribution is, X~Exp(0.2)

Here m=0.2

Probability Density Function of Exponential Distribution is f(x)=me-mx

Putting the value of m=0.2we get,

role="math" localid="1648192596517" f(x)=0.2e-0.2x

The above expression represents the Probability Density Function of the given expression.

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Most popular questions from this chapter

Use the following information to answer the next eleven exercises. The age of cars in the staff parking lot of a suburban college is uniformly distributed from six months (0.5 years) to 9.5 years.

Are the data discrete or continuous?

Births are approximately uniformly distributed between the 52 weeks of the year. They can be said to follow a uniform distribution from one to 53 (spread of 52 weeks).

a. X ~ _________

b. Graph the probability distribution.

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d. รฌ = _________

e. รณ = _________

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g. P(2 < x < 31) = _________

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i. P(12 < x|x < 28) = _________

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We are interested in the time (years) it takes to decay carbon-14. Are the data discrete or continuous?

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Use the following information to answer the next three exercises.

The Sky Train from the terminal to the rentalโ€“car and longโ€“term parking center is supposed to arrive every eight minutes. The waiting times for the train are known to follow a uniform distribution.

79. What is the average waiting time (in minutes)?

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c. three

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