Deck 5: Introduction to Probability and Sample Statistics

Question 1

A bowl contains 15 balls: 5 red, 3 orange, 4 yellow, and 3 blue. The probability that a ball selected at random is yellow is equal to which one of the following?

A) 3/15
B) 4/15
C) 5/15
D) Cannot be determined

Answer 1

B

Question 2

A basket contains 58 rings: 10 diamond, 22 amethyst, and 26 aquamarine. The probability that a ring selected at random is amethyst is equal to which one of the following?

A) .17
B) .38
C) .45
D) Cannot be determined

Answer 2

B

Question 3

Which of the following is needed to be able to draw inferences about a parameter based on a sample estimate?

A) Random sample
B) Underlying theoretical distribution
C) Outcome probability
D) Sample population selection

Answer 3

A

Question 4

To draw inferences from a sample, to what is the sample statistic compared?

A) Random sample
B) Underlying distribution of estimates
C) Outcome probability
D) Sample population selection