14) A student survey was conducted at a major university. A random sample of 99 students reported data on their gender and GPA. Summary statistics for each gender are displayed in the table below: Gender Mean GPA StDev SE Mean 3.21 2.96 Female 59 0.51131 0.06657 Male 40 0.57194 0.09043 A 95% confidence interval for the mean difference in GPA between females and males (GPAF- GPAM) was calculated to be (0.02, 0.47). Does the interval capture 0? Explain what this means (conclusion).

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
Question

SEE IMAGE

 

Answer the question. 14)
A student survey was conducted at a major university. A random sample of 99 students reported data on their
gender and GPA. Summary statistics for each gender are displayed in the table below:
Gender N Mean GPA StDev SE Mean
Female 59 3.21 0.51131 0.06657
Male 40 2.96 0.57194 0.09043
A 95% confidence interval for the mean difference in GPA between females and males (GPAF — GPAM) was
calculated to be (0.02, 0.47). Does the interval capture 0? Explain what this means (conclusion).
__________________________________________________________________________________________________

**Question:**

A student survey was conducted at a major university. A random sample of 99 students reported data on their gender and GPA. Summary statistics for each gender are displayed in the table below:

| Gender | N  | Mean GPA | StDev  | SE Mean |
|--------|----|----------|--------|---------|
| Female | 59 | 3.21     | 0.51131 | 0.06657 |
| Male   | 40 | 2.96     | 0.57194 | 0.09043 |

A 95% confidence interval for the mean difference in GPA between females and males (GPAₒF − GPAₒM) was calculated to be (0.02, 0.47). Does the interval capture 0? Explain what this means (conclusion).

---

**Explanation:**

The table summarizes data collected from 99 students, split into two groups based on gender: Female (59 students) and Male (40 students). For each group, the table provides the mean GPA, standard deviation (StDev), and standard error of the mean (SE Mean).

The 95% confidence interval for the mean difference in GPA between females and males is calculated as (0.02, 0.47). This interval does not include 0, which suggests that there is a statistically significant difference in mean GPAs between female and male students, where female students have a higher average GPA than male students. This conclusion is drawn at the 95% confidence level, indicating there is a high probability that the true mean difference lies within this interval.
Transcribed Image Text:**Question:** A student survey was conducted at a major university. A random sample of 99 students reported data on their gender and GPA. Summary statistics for each gender are displayed in the table below: | Gender | N | Mean GPA | StDev | SE Mean | |--------|----|----------|--------|---------| | Female | 59 | 3.21 | 0.51131 | 0.06657 | | Male | 40 | 2.96 | 0.57194 | 0.09043 | A 95% confidence interval for the mean difference in GPA between females and males (GPAₒF − GPAₒM) was calculated to be (0.02, 0.47). Does the interval capture 0? Explain what this means (conclusion). --- **Explanation:** The table summarizes data collected from 99 students, split into two groups based on gender: Female (59 students) and Male (40 students). For each group, the table provides the mean GPA, standard deviation (StDev), and standard error of the mean (SE Mean). The 95% confidence interval for the mean difference in GPA between females and males is calculated as (0.02, 0.47). This interval does not include 0, which suggests that there is a statistically significant difference in mean GPAs between female and male students, where female students have a higher average GPA than male students. This conclusion is drawn at the 95% confidence level, indicating there is a high probability that the true mean difference lies within this interval.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Means
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman