A student in PSYC 227 class collects data for a class project. She asks 10 classmates to shoot 10 free throws on a standard basketball court and records the number of shots made by each participant (X). She also has these same participants run an obstacle course and records their time (Y). She wants to statistically evaluate if variables X and Y are related. She computes the sum of squared deviations for X, the sum of squared deviations for Y, and the sum of cross products between X and Y. SUM Should you reject or fail to reject the null hypothesis? O Reject O Fail to reject (X-X)² 3.24 7.84 1.44 10.24 0.04 0.64 3.24 1.44 0.04 0.64 28.8 (Y-Y)² 15.21 0.81 16.81 4.41 9.61 8.41 15.21 0.01 4.41 3.61 78.5 (X-X) (Y-Y) -7.02 -2.52 -4.92 -6.72 -0.62 -2.32 -7.02 -0.12 -0.42 -1.52 -33.2

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
icon
Related questions
Question
### Analysis of Data Collected from a Psychology Class Project

A student in a PSYC 227 class collected data for a class project to explore the relationship between two variables: the number of free throws made by classmates on a basketball court (X) and their times completing an obstacle course (Y). The data collection involved 10 participants. The student calculated several statistics to evaluate the relationship between these variables, including the sum of squared deviations for X, the sum of squared deviations for Y, and the sum of cross products between X and Y.

#### Data Summary Table
The table below presents the calculated values:

| \((X - \bar{X})^2\) | \((Y - \bar{Y})^2\) | \((X - \bar{X})(Y - \bar{Y})\) |
|--------------------|---------------------|-------------------------------|
| 3.24               | 15.21               | -7.02                         |
| 7.84               | 0.81                | -2.52                         |
| 1.44               | 16.81               | -4.92                         |
| 10.24              | 4.41                | -6.72                         |
| 0.04               | 9.61                | -0.62                         |
| 0.64               | 8.41                | -2.32                         |
| 3.24               | 15.21               | -7.02                         |
| 1.44               | 0.01                | -0.12                         |
| 0.04               | 4.41                | -0.42                         |
| 0.64               | 3.61                | -1.52                         |

SUM: 
- \((X - \bar{X})^2\) = 28.8
- \((Y - \bar{Y})^2\) = 78.5
- \((X - \bar{X})(Y - \bar{Y})\) = -33.2

#### Interpretation of Results
- **\((X - \bar{X})^2\)**: This column represents the sum of squared deviations for variable X (number of free throws made). 
- **\((Y - \bar{Y})^2\)**: This column represents the sum of
Transcribed Image Text:### Analysis of Data Collected from a Psychology Class Project A student in a PSYC 227 class collected data for a class project to explore the relationship between two variables: the number of free throws made by classmates on a basketball court (X) and their times completing an obstacle course (Y). The data collection involved 10 participants. The student calculated several statistics to evaluate the relationship between these variables, including the sum of squared deviations for X, the sum of squared deviations for Y, and the sum of cross products between X and Y. #### Data Summary Table The table below presents the calculated values: | \((X - \bar{X})^2\) | \((Y - \bar{Y})^2\) | \((X - \bar{X})(Y - \bar{Y})\) | |--------------------|---------------------|-------------------------------| | 3.24 | 15.21 | -7.02 | | 7.84 | 0.81 | -2.52 | | 1.44 | 16.81 | -4.92 | | 10.24 | 4.41 | -6.72 | | 0.04 | 9.61 | -0.62 | | 0.64 | 8.41 | -2.32 | | 3.24 | 15.21 | -7.02 | | 1.44 | 0.01 | -0.12 | | 0.04 | 4.41 | -0.42 | | 0.64 | 3.61 | -1.52 | SUM: - \((X - \bar{X})^2\) = 28.8 - \((Y - \bar{Y})^2\) = 78.5 - \((X - \bar{X})(Y - \bar{Y})\) = -33.2 #### Interpretation of Results - **\((X - \bar{X})^2\)**: This column represents the sum of squared deviations for variable X (number of free throws made). - **\((Y - \bar{Y})^2\)**: This column represents the sum of
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 1 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability
A First Course in Probability
Probability
ISBN:
9780321794772
Author:
Sheldon Ross
Publisher:
PEARSON