You Explain It! Independence Suppose a mother already has three girls from three separate pregnancies. Does the fact that the mother already has three girls affect the likelihood of having a fourth girl? Explain.
Table of contents
- 1. Intro to Stats and Collecting Data1h 14m
- 2. Describing Data with Tables and Graphs1h 55m
- 3. Describing Data Numerically2h 5m
- 4. Probability2h 16m
- 5. Binomial Distribution & Discrete Random Variables3h 6m
- 6. Normal Distribution and Continuous Random Variables2h 11m
- 7. Sampling Distributions & Confidence Intervals: Mean3h 23m
- Sampling Distribution of the Sample Mean and Central Limit Theorem19m
- Distribution of Sample Mean - Excel23m
- Introduction to Confidence Intervals15m
- Confidence Intervals for Population Mean1h 18m
- Determining the Minimum Sample Size Required12m
- Finding Probabilities and T Critical Values - Excel28m
- Confidence Intervals for Population Means - Excel25m
- 8. Sampling Distributions & Confidence Intervals: Proportion1h 25m
- 9. Hypothesis Testing for One Sample3h 29m
- 10. Hypothesis Testing for Two Samples4h 50m
- Two Proportions1h 13m
- Two Proportions Hypothesis Test - Excel28m
- Two Means - Unknown, Unequal Variance1h 3m
- Two Means - Unknown Variances Hypothesis Test - Excel12m
- Two Means - Unknown, Equal Variance15m
- Two Means - Unknown, Equal Variances Hypothesis Test - Excel9m
- Two Means - Known Variance12m
- Two Means - Sigma Known Hypothesis Test - Excel21m
- Two Means - Matched Pairs (Dependent Samples)42m
- Matched Pairs Hypothesis Test - Excel12m
- 11. Correlation1h 24m
- 12. Regression1h 50m
- 13. Chi-Square Tests & Goodness of Fit2h 21m
- 14. ANOVA1h 57m
4. Probability
Basic Concepts of Probability
Problem 5.6.4a
Textbook Question
"Simulating Election Results
Suppose that polls indicate a candidate in a local school board election has the support of 52% of voters.
a. Explain how you could use the integers from 1 to 100 to simulate votes.
"
Verified step by step guidance1
Understand that the candidate has 52% support, meaning that out of 100 voters, approximately 52 would vote for the candidate and 48 would not.
Assign integers from 1 to 100 to represent individual voters in the simulation.
Designate the integers 1 through 52 to represent voters who support the candidate, since 52% corresponds to 52 out of 100.
Assign the integers 53 through 100 to represent voters who do not support the candidate.
To simulate a vote, randomly select an integer between 1 and 100; if the number falls between 1 and 52, count it as a vote for the candidate, otherwise count it as a vote against.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Simulation in Statistics
Simulation involves using random or pseudo-random processes to model real-world phenomena. In this context, it helps approximate election outcomes by mimicking voter behavior based on given probabilities, allowing us to explore possible results without conducting actual polls.
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Probability and Proportions
Probability represents the likelihood of an event occurring, expressed as a number between 0 and 1 or as a percentage. Here, 52% support means each voter has a 0.52 chance of voting for the candidate, which guides how we assign outcomes in the simulation.
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Random Number Assignment
Using integers from 1 to 100, each number can represent a voter. Assigning numbers 1 to 52 to support the candidate and 53 to 100 to oppose simulates the 52% support. Randomly selecting numbers simulates individual votes reflecting the candidate's support level.
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