[NW] Verify that the following is a probability model. What do we call the outcome “blue”?
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.T.11d
Textbook Question
The following represent the results of a survey in which individuals were asked to disclose what they perceive to be the ideal number of children.

d. Among the females, what is the probability the individual believes the ideal number of children is 2?
Verified step by step guidance1
Identify the total number of females surveyed, which is given in the table as 188.
Find the number of females who believe the ideal number of children is 2, which is given as 87.
Recall that the probability of an event is calculated as the ratio of the number of favorable outcomes to the total number of possible outcomes.
Set up the probability formula for this problem: \(P(\text{ideal number of children} = 2 \mid \text{female}) = \frac{\text{Number of females who chose 2}}{\text{Total number of females}}\).
Substitute the values from the table into the formula: \(P = \frac{87}{188}\).
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Probability
Probability measures the likelihood of an event occurring, expressed as a number between 0 and 1. It is calculated by dividing the number of favorable outcomes by the total number of possible outcomes. In this question, it involves finding the chance that a randomly selected female believes the ideal number of children is 2.
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Conditional Probability
Conditional probability is the probability of an event occurring given that another event has already occurred. Here, we focus on females only, so the probability is conditional on the individual being female. This means we consider only the female subgroup when calculating the probability.
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Conditional Probability Rule
Frequency Distribution Table
A frequency distribution table organizes data into categories and shows the count of observations in each category. This table displays the number of males and females who chose each ideal number of children, allowing us to extract relevant counts for probability calculations.
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