Biology Forums - Study Force

A jug contains 5 black marbles and 5 white marbles well mixed. A marble is removed and its color noted. A second marble is removed, without replacing the first marble, and its color is also noted. If x is the total number of black marbles in the two draws, then x has a binomial distribution.
  Indicate whether the statement is true or false

Q. 2

A professor of statistics in Michigan State University wants to determine whether the average starting salaries among graduates of the 15 universities in Michigan are equal. A sample of 25 recent graduates from each university was randomly taken. The appropriate critical value for the ANOVA test is obtained from the F-distribution with numerator and denominator degrees of freedom, respectively, equal to:
 a. 15 and 25
  b. 14 and 360
  c. 360 and 14
  d. 25 and 15

Q. 3

A coin toss experiment represents a binomial experiment only if the coin is balanced, i.e., p = 0.5.
  Indicate whether the statement is true or false

Q. 4

ANOVA is used to compare two or more population:
 a. variances.
  b. proportions.
  c. medians.
  d. means.

Q. 5

In a binomial experiment, the probability of success is the same on every trial.
  Indicate whether the statement is true or false

Q. 6

What distribution does the F-distribution approach as the sample size increases?
 a. Binomial
  b. Normal
  c. Student's t - distribution
  d. Chi-square

Q. 7

A binomial random variable is an example of a discrete random variable.
  Indicate whether the statement is true or false

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