In general, incomes of employees in large firms tend to be:

In general, incomes of employees in large firms tend to be:
 a. skewed to the right
  b. skewed to the left
  c. symmetric
  d. unknown

Q. 2

A binomial experiment always has two or more possible outcomes to each trial.
  Indicate whether the statement is true or false

Q. 3

The total area of the bars in a relative frequency histogram:
 a. depends on the sample size
  b. depends on the number of bars
  c. depends on the width of each bar
  d. depends on the population size
  e. depends on the frequency

Q. 4

Each trial in a binomial probability experiment has two possible outcomes (success, failure) and that P(success) + P(failure) = 1.
  Indicate whether the statement is true or false

Q. 5

The total area of the six bars in a relative frequency histogram for which the width of each bar is ten units is:
 a. 6
  b. 10
  c. 16
  d. 60
  e. 1

Q. 6

The binomial random variable x is the count of the number of successful trials that occur in n trials. The random variable x may take on any real value from zero to n.
  Indicate whether the statement is true or false

Q. 7

Which of the following statements is not true?
 a. One form of descriptive statistics uses graphical techniques.
  b. One form of descriptive statistics uses numerical techniques.
  c. A distribution is skewed to the left if it contains a few unusually large measurements.
  d. Statistical inference is used to draw conclusions or inferences about characteristics of populations based on sample data.
  e. A distribution is skewed to the left if it is symmetric.