Mendel’s Peas Mendel conducted some of his famous experiments with peas that were either smooth yellow plants or wrinkly green plants. If four peas are randomly selected from a batch consisting of four smooth yellow plants and four wrinkly green plants, find the probability that the four selected peas are of the same type.
Table of contents
- 1. Intro to Stats and Collecting Data1h 14m
- 2. Describing Data with Tables and Graphs1h 56m
- 3. Describing Data Numerically2h 5m
- 4. Probability2h 17m
- 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 - ExcelBonus23m
- Introduction to Confidence Intervals15m
- Confidence Intervals for Population Mean1h 18m
- Determining the Minimum Sample Size Required12m
- Finding Probabilities and T Critical Values - ExcelBonus28m
- Confidence Intervals for Population Means - ExcelBonus25m
- 8. Sampling Distributions & Confidence Intervals: Proportion2h 10m
- 9. Hypothesis Testing for One Sample5h 8m
- Steps in Hypothesis Testing1h 6m
- Performing Hypothesis Tests: Means1h 4m
- Hypothesis Testing: Means - ExcelBonus42m
- Performing Hypothesis Tests: Proportions37m
- Hypothesis Testing: Proportions - ExcelBonus27m
- Performing Hypothesis Tests: Variance12m
- Critical Values and Rejection Regions28m
- Link Between Confidence Intervals and Hypothesis Testing12m
- Type I & Type II Errors16m
- 10. Hypothesis Testing for Two Samples5h 37m
- Two Proportions1h 13m
- Two Proportions Hypothesis Test - ExcelBonus28m
- Two Means - Unknown, Unequal Variance1h 3m
- Two Means - Unknown Variances Hypothesis Test - ExcelBonus12m
- Two Means - Unknown, Equal Variance15m
- Two Means - Unknown, Equal Variances Hypothesis Test - ExcelBonus9m
- Two Means - Known Variance12m
- Two Means - Sigma Known Hypothesis Test - ExcelBonus21m
- Two Means - Matched Pairs (Dependent Samples)42m
- Matched Pairs Hypothesis Test - ExcelBonus12m
- Two Variances and F Distribution29m
- Two Variances - Graphing CalculatorBonus16m
- 11. Correlation1h 24m
- 12. Regression3h 33m
- Linear Regression & Least Squares Method26m
- Residuals12m
- Coefficient of Determination12m
- Regression Line Equation and Coefficient of Determination - ExcelBonus8m
- Finding Residuals and Creating Residual Plots - ExcelBonus11m
- Inferences for Slope31m
- Enabling Data Analysis ToolpakBonus1m
- Regression Readout of the Data Analysis Toolpak - ExcelBonus21m
- Prediction Intervals13m
- Prediction Intervals - ExcelBonus19m
- Multiple Regression - ExcelBonus29m
- Quadratic Regression15m
- Quadratic Regression - ExcelBonus10m
- 13. Chi-Square Tests & Goodness of Fit2h 21m
- 14. ANOVA2h 29m
4. Probability
Counting
Problem 4.4.39
Textbook Question
Pick 10 Lottery For the New York Pick 10 lottery, the player first selects 10 numbers from 1 to 80. Then there is an official drawing of 20 numbers from 1 to 80. The prize of \$500,000 is won if the 10 numbers selected by the player are all included in the 20 numbers that are drawn. Find the probability of winning that prize.
Verified step by step guidance1
Step 1: Understand the problem. The player selects 10 numbers from a pool of 80, and the official drawing selects 20 numbers from the same pool. To win, all 10 numbers chosen by the player must be among the 20 numbers drawn. This is a probability problem involving combinations.
Step 2: Calculate the total number of ways to choose 10 numbers from the 80 available. This is given by the combination formula: C(n, k) = n! / (k!(n-k)!), where n is the total number of items, and k is the number of items to choose. Here, n = 80 and k = 10. Use the formula to compute C(80, 10).
Step 3: Calculate the number of favorable outcomes. To win, the 10 numbers chosen by the player must be among the 20 numbers drawn. First, calculate the number of ways to choose 10 numbers from the 20 drawn numbers using the combination formula: C(20, 10).
Step 4: Account for the remaining numbers. After selecting the 10 winning numbers from the 20 drawn, the remaining 70 numbers (80 total - 10 chosen by the player) must not include any of the player's numbers. Calculate the number of ways to choose the remaining 10 numbers from these 70 using the combination formula: C(70, 10).
Step 5: Compute the probability. The probability of winning is the ratio of the number of favorable outcomes to the total number of outcomes. This is given by P = C(20, 10) / C(80, 10). Simplify this expression to find the probability of winning the prize.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Combinatorics
Combinatorics is a branch of mathematics dealing with combinations and arrangements of objects. In the context of the lottery, it helps determine how many ways a player can choose 10 numbers from a set of 80, which is essential for calculating probabilities.
Probability
Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1. In this lottery scenario, it involves calculating the chances of the player's selected numbers being among the drawn numbers, which is crucial for determining the odds of winning.
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Introduction to Probability
Hypergeometric Distribution
The hypergeometric distribution models the probability of k successes in n draws without replacement from a finite population. In this lottery, it applies because the player selects 10 numbers from a total of 80, and we need to find the probability that all selected numbers are included in the 20 drawn numbers.
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