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Exam (elaborations)

Solution Manual for Statistical Distribution and Binomial Models

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  • Course
  • Biostatistics
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  • Biostatistics

What is a discrete probability distribution? - Answers lists each possible value a random variable can assume, together with its probability What are the two conditions that determine a probability distribution? - Answers The probability of each value of the discrete random variable is between 0 a...

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  • September 22, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Biostatistics
  • Biostatistics
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TutorJosh
Solution Manual for Statistical Distribution and Binomial Models

What is a discrete probability distribution? - Answers lists each possible value a random variable can
assume, together with its probability

What are the two conditions that determine a probability distribution? - Answers The probability of each
value of the discrete random variable is between 0 and 1, inclusive, and the sum of all the probabilities is
1.

What is the significance of the mean of a probability distribution? - Answers It is the expected value of a
discrete random variable.

T/F

In most applications, continuous random variables represent counted data, while discrete random
variables represent measured data. - Answers False. In most applications, discrete random variables
represent counted data, while continuous random variables represent measured data.

T/F

The mean of a random variable represents the "theoretical average" of a probability experiment and
sometimes is not a possible outcome. - Answers True

Decide whether the graph represents a discrete random variable or a continuous random variable.

The length of time students use a computer each week - Answers Continuous, because the length of
time is a random variable that is uncountable.

Determine whether the random variable is discrete or continuous.

a. The weight of a T-bone steak.

b. The number of fish caught during a fishing tournament.

c. The number of bald eagles in the country

d. The number of light bulbs that burn out in the next week in a room with 18 bulbs.

e. The time it takes to fly from City A to City B. - Answers a.) continuous

b.) discrete

c.) discrete

d.) discrete

e.) continuous

Decide whether the random variable x is discrete or continuous.

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