Biology Forums - Study Force

A statistics class has 4 teaching assistants (TAs): three female assistants (Lauren, Rona, and Leila) and one male assistant (Josh). Each TA teaches one discussion section. A student picks a discussion section. The two events W = the TA is a woman and M = the TA is a man are
 a. independent events.
  b. disjoint (mutually exclusive) events.
  c. each simple events.
  d. None of the above.

Q. 2

A statistics class has 4 teaching assistants (TAs): three female assistants (Lauren, Rona, and Leila) and one male assistant (Josh). Each TA teaches one discussion section. A student picks a discussion section. The events L = the TA is Lauren and R = the TA is Rona are
 a. independent events.
  b. disjoint (mutually exclusive) events.
  c. each simple events.
  d. None of the above.

Q. 3

A statistics class has 4 teaching assistants (TAs): three female assistants (Lauren, Rona, and Leila) and one male assistant (Josh). Each TA teaches one discussion section. A student picks a discussion section. The two events W = the TA is a woman and J = the TA is Josh are
 a. independent events.
  b. disjoint (mutually exclusive) events.
  c. each simple events.
  d. None of the above.

Q. 4

The lifetime risk for a woman to develop breast cancer is estimated to be about 1 in 8 . Express this probability as a fraction, as a proportion, and as a percentage.

Q. 5

Every year, on the first day of school, the sixth grade teacher at Greenville Middle School asks his students to pick their favorite primary color: red, yellow, or blue. From years of experience, the teacher knows that only 1 in 7 students choose yellow and that about half of the students pick blue. What is the chance that a student picks red?

Q. 6

When two dice are rolled, there are 36 possible outcomes. Six of these outcomes have two the same numbers (two ones, two twos, etc.). The chance of getting two of the same numbers when rolling two dice is 6/36 or 0.1667 . What is the chance of getting 2 numbers that are different from one another?

Q. 7

A plane flies over the ocean in search of schools of fish. On any given day, there is a 0.07 chance of finding 2 or more schools of fish, and a 0.28 chance of finding only one school of fish. What is the chance the day of searching results in not finding any schools of fish at all?

Q. 8

When 2 cards are drawn at random from a standard 52-card deck, there is a 0.8507 chance of drawing 0 Aces, and a 0.1448 chance of drawing 1 Ace. What is the chance of drawing 2 Aces?

Content hidden