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Chapter 5: Q 14. (page 247)

What does the probability distribution of a discrete random variable tell you?

Short Answer

Expert verified

A discrete random variable gives us its probable values and possibilities.

Step by step solution

01

Step 1. Given information.

The given statement is:

What does the probability distribution of a discrete random variable tell you

02

Step 2. Explanation.

The likelihood of a discrete random variable informs us about the discrete random variable's probable values and accompanying probabilities.

The equivalent probability distribution for any discrete random variable Xican be represented as Pxi.

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Most popular questions from this chapter

In Exercises 5.16-5.26, express your probability answers as a decimal rounded to three places.

Cardiovascular Hospitalizations. From the Florida State Center for Health Statistics report Women and Cardiovascular Disease Hospitalization, we obtained the following table showing the number of female hospitalizations for cardiovascular disease, by age group, during one year.

One of these case records is selected at random. Find the probability that the woman was

(a) in her 50s.

(b) less than 50 years old.

(c) between 40 and 69 years old, inclusive.

(d) 70 years old or older.

A random variable X has mean 3.6. If you make a large number of repeated independent observations of the random variable X, the average value of those observations will be approximately .

Construct a venn diagram that portrays four events A, B ,C and D that have the following properties: Events A, B and D mutually exclusive: events A,B and D are mutually exclusive: no other three of the four events are mutually exclusive

In Exercises 5.16-5.26, express your probability answers as a decimal rounded to three places.

Russian Presidential Election. According to the Central Election Commission of the Russian Federation, a frequency distribution for the March 4. 2012 Russian presidential election is as follows.

Find the probability that a randomly selected voter voted for

a. Putin.

b. either Zhirinovsky or Mironov.

c. someone other than Putin.

Answer true or false to the following statement and justify your answer. If event A and event B are not mutually exclusive, neither are events A,B and C for every event C.
See all solutions

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