Question 9

Event B depends on event A if

• occurrence of A affects probability of B.
• occurrence of A does not affect probability of B.
• A and B cannot occur simultaneously.
• A and B can occur simultaneously.
• None of the above.
• All of the above.

Question 10

Events A and B are mutually exclusive if

• occurrence of A affects probability of B.
• occurrence of A does not affect probability of B.
• A and B can occur simultaneously.
• A and B cannot occur simultaneously.
• None of the above.
• All of the above.

Question 11

A bar graph in which the horizontal scale represents classes and the vertical scale represents frequencies is called

• a pie chart.
• a histogram.
• an ogive.
• a stem-and-leaf display.
• a scatter plot.
• a Pareto chart.