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Week 8 - Probability Flashcards | StudBud
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Week 8 - Probability
Week 8 - Probability
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A 1003PSY Research Methods & Statistics PASS Quiz for Week 7 content on Probability.
Flashcards
10 cards
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Practice quiz
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Questions
10
Answers
1
Rolling three dice at once, what are the odds you roll a 1, 2, AND 3?
p = 0.005
p = 0.05
p = 0.55
p = 0.5
2
The probability of it raining tomorrow is
p
= .32; What are the odds of clear skies?
68%
32%
86%
64%
3
Probability is calculated by dividing?
Standardised z-score by total probability
Number of outcomes interested in by total possible outcomes
Total probability by standardised z-scores
Total possible outcomes by number of outcomes interested in
4
Exam length is normally distributed at µ = 100 σ = 20, what is the probability of having a 40 minute or shorter exam?
0.2%
20%
0.13%
0.28%
5
Over the long-term, random variation is __________?
Sequential
Predictable
Unpredictable
Random
6
Choosing two kittens at random, what is the chance you end up with a grey AND a black kitten?
16%
1.6%
40%
80%
7
Inferential statistics are the process of ___________?
Drawing conclusions about a sample based on a population
Drawing conclusions about a population based on a sample
Describing the spread of the data
Describing the distribution of the data
8
When rolling a dice and simultaneously flipping a coin, what is the probability you will land on a 1 OR a heads?
p = 0.04
p = 0.08
p = 0.76
p = 0.67
9
True or False: A test can be reliable without being valid.
False
True
10
In roulette you place a bet on Green in round 1, and a bet on Red in round 2. What are the odds you win both rounds?
p = 0.315
p = 0.13
p = 0.513
p = 0.013
