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Lecture

# MATH 1P98: 'Chosing' Probabilities

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School
Brock University
Department
Mathematics
Course
MATH 1P98
Professor
Dot Miners
Semester
Fall

Description
‘Chosing’ Probabilities To finish a board game, you must roll a 6 twice. If you are given 10 rolls, what is the possibility of ending the game? 2 -2 P(2) = 10(021667) (0.8333) = 0.2907 What’s the probability of rolling at least two 6’s? P(≥2) = 1- P(0)-P(1) 0 10 1 0 = 1-(10 (0,667) (0.8333) + C (0.1061) (0.8333) = 1-0.16144-0.32216 = 0.6609 Ex2: Steve was given a mc test which had 20 questions with options a-d on each. He guesses every question. What is the probability that Steve will get 50% exactly? n = 20 ; r = 10 ; P = ¼ = 0.25 ; q = 1-p = 0.75 10 10 P(10) = C200105) (0.75) = 0.0099 What is the probability h
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