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We throw a fair die repeatedly until an outcome of either 3 or 4 appears for the fourth time. fX denotes the number of trials until this happens, then which of the following statements s correct?

We throw a fair die repeatedly until an outcome of either 3 or 4 appears for the fourth time. fX denotes the number of trials until this happens, then which of the following statements s correct?

Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section6.4: Hyperbolas
Problem 5ECP: Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.
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We throw a fair die repeatedly until an outcome of either 3 or 4 appears for the fourth time. If X denotes the number of trials until this happens, then which of the following statements is correct? ○ P(X = 4) = (2/3)4 ○ P(X = 3) = (1/3)4 ○ E(X) = 3 ○ E(X) = 12
Transcribed Image Text:We throw a fair die repeatedly until an outcome of either 3 or 4 appears for the fourth time. If X denotes the number of trials until this happens, then which of the following statements is correct? ○ P(X = 4) = (2/3)4 ○ P(X = 3) = (1/3)4 ○ E(X) = 3 ○ E(X) = 12
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