Question

(PLS HURRY ASAP 100 POINTS)

(Theoretical Probability MC)

The tree diagram represents the sample space for the repeated experiment of a coin being tossed 4 times.


Determine P(at least 3 tails).

A: 0.025
B: 0.0625
C: 0.125
D: 0.3125

Answer 1

• D) 0.3125

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Total number of outcomes is 16, count of all outcomes.

Number of outcomes with 3 or more tiles is 5:

• HTTT, THTT, TTHT, TTTH, TTTT

The probability is:

• P = favorable outcomes / total outcomes
• P(at least 3 tails) = 5/16 = 0.3125

Correct choice is D.