Describe the probability of each given outcome using one of the phrases below:►Impossible ►Unlikely, ►Neither Likely nor Unlikely, ►Likely, ►Certain

Question

Describe the probability of each given outcome using one of the phrases below:►Impossible ►Unlikely, ►Neither Likely nor Unlikely, ►Likely, ►Certain

Part A: A bag contains 10 Snickers bars and 1 Twix bar, and the outcome is drawing a Twix bar. Which phrase best describes the probability? Show your work or Explain.

Part B: A bag contains 4 Snickers bars and 1 Twix bar, and the outcome is drawing a Twix bar. Does the phrase that describes the probability of drawing a Twix bar change from Part A? Show your work or Explain

Answer 1

The theoretical probability of an outcome from an event is defined as the quotient of the number of ways that the outcome can occur and the possible number of outcomes. The measure of probability is a fraction with a value of 0 and 1: 0 indicating that the outcome is impossible and 1 meaning the event is a certainty.

A. For Part A there are 11 possible candy bars that can be selected and only 1 of the 11 is a TWIX bar. Therefore the P(TWIX) is 1/11 or 0.09. I would characterize the probability as "Unlikely".

B. For Part B there are 5 candy bars in total and 1 TWIX bar. The P(TWIX) is 1/5 or, 0.20. The probability of selecting a TWIX increases significantly.