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STAT 101 · Course unit

Probability: assemble an event model

Calculate probabilities from a finite sample space.

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  1. 01 Course challenge
  2. 02 Diagnostic
  3. 03 Targeted repair
  4. 04 Mastery & return

Original course work

A bag holds 3 red and 5 blue counters. Draw one counter, replace it, then draw again. Calculate simple and repeated-event probabilities.

Required support is still open. Demonstrate practice mastery in the required tools before checking the course challenges.

What is the probability of red on one draw? Enter a fraction or decimal.

With replacement, what is the probability of red on both draws?

Unit prerequisite tools

  • Fractions

    required

    Not tested yet

  • Ratios and unit rates

    diagnostic-recommended

    Not tested yet

  • Percentages

    on-demand

    Available whenever needed

Return to STAT 101