Theoretical Probability: Single-Event Quiz

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Fundamentals of single-event probability

Ikki

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Theoretical Probability: Single-Event Quiz


Theoretical Probability: Single-Event QuizVersión en línea Fundamentals of single-event probability por Ikki 1 What is the formula for the theoretical probability of an event A? a P(A) = total outcomes / favorable outcomes b P(A) = observed occurrences / trials c P(A) = number of favorable outcomes / total outcomes d P(A) = sum of probabilities of all events 2 In a fair six-sided die, what is P(rolling a 4)? a 5/6 b 1/3 c 1/6 d 1/4 3 If an event is certain, its probability is? a 0.5 b 0 c 1 d -1 4 For a single coin toss, P(heads)? a 1 b 1/2 c 0 d 1/3 5 If the sample space has 10 equally likely outcomes and 2 favorable, P(A)? a 1/10 b 2/10 c 1/5 d 5/10 6 What does independence mean in probability? a The outcome of one trial does not affect another b Probability changes after each trial c Outcomes sum to 1 d Events cannot occur together 7 Which scenario uses theoretical probability? a Roll two dice and observe the average result b Toss a biased coin and estimate from past results c Guess the weather before a day d Roll a fair die and predict the chance of rolling a 3 8 If there are 3 red balls and 7 blue balls in a bag, P(red)? a 1/2 b 3/10 c 7/10 d 0 9 In a random event with equally likely outcomes, theoretical probability equals a observed/total b sum of outcomes c square root of outcomes d favorable/total 10 P(A or B) with A and B disjoint equals a P(A)+P(B) b P(A)-P(B) c 1-(P(A)+P(B)) d P(A)*P(B)