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Ashley b Ashley b
wrote...
Posts: 369
Rep: 0 0
6 years ago
The probability distribution of a Poisson random variable provides a good model for data that represent the number of occurrences of a specified event in a given unit of time or space.
  Indicate whether the statement is true or false

Q. 2

The values below are suggested coefficients of correlation, r. The one that indicates the strongest positive relationship between the input variable x and the output variable y is:
 a. 1.2.
  b. 0.7.
  c. 0.0.
  d. 0.8.

Q. 3

The Poisson probability distribution is an example of continuous probability distribution.
  Indicate whether the statement is true or false

Q. 4

The values below are suggested coefficients of correlation, r. The one that indicates the strongest negative relationship between the input variable x and the output variable y is:
 a. -1.5.
  b. -0.7.
  c. 0.0.
  d. 0.8.

Q. 5

Which of the following statements is true with respect to the binomial distribution?
 a. The binomial distribution tends to be more symmetric as the probability of success p approaches 0.5.
  b. As the number of trials increase, the expected value of the random variable decreases.
  c. As the number of trials increase for a given probability of success, the binomial distribution becomes more skewed.
  d. The binomial distribution tends to be more symmetric as the probability of success p approaches 1.0.
  e. None of these.

Q. 6

The biggest disadvantage of covariance as a measure of linear dependency is that it does not have a standardized unit of measure.
  Indicate whether the statement is true or false

Q. 7

If the random variable x is binomially distributed with n = 10 and p = .05, then P(x = 2) is:
 a. 0.599
  b. 0.914
  c. 0.074
  d. 0.55
  e. 1.00
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Replies
wrote...
6 years ago
Answer to #1

T

Answer to #2

D

Answer to #3

F

Answer to #4

B

Answer to #5

A

Answer to #6

T

Answer to #7

C
Ashley b. Author
wrote...
6 years ago
Great answers! <3
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