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. 2A 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. 3A 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. 4ANOVA is used to compare two or more population:
a. variances.
b. proportions.
c. medians.
d. means.
Q. 5In a binomial experiment, the probability of success is the same on every trial.
Indicate whether the statement is true or false
Q. 6What distribution does the F-distribution approach as the sample size increases?
a. Binomial
b. Normal
c. Student's t - distribution
d. Chi-square
Q. 7A binomial random variable is an example of a discrete random variable.
Indicate whether the statement is true or false
Quick Reply
