OpenStax, Statistics §3.1 Terminology · Exercise 2 · Probability · Counting & chance
Terminology · Exercise 2
A box is filled with several party favors. It contains 12 hats, 15 noisemakers, 10 finger traps, and five bags of confetti.
Let H = the event of getting a hat.
Let N = the event of getting a noisemaker.
Let F = the event of getting a finger trap.
Let C = the event of getting a bag of confetti.
Find P(H).
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Statistics · §3.1 Terminology · Exercise 2
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