Answered: A researcher was interested in…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

100%

A researcher was interested in comparing the mean grade-point-average (GPA) of students at the University of Toronto Scarborough and Mississauga campuses. Independent random samples of 8 students from the Scarborough campus and 13 students from the Mississauga campus yielded the following GPAs. You can assume the data in each group follow a normal distribution. Do the data provide sufficient evidence to conclude that the mean GPA of students at the Scarborough campus different from the mean GPA of students at the Mississauga campus?

A. What statistical test is most appropriate to answer this question?

B. Identify the relevant assumptions and conditions. State how these have or have not been met.

C. Write an appropriate null and alternative hypothesis for this question.

Scarborough
3.7
3.2
3.0
2.5
2.7
3.6
2.8
3.4
Mississauga
3.8 2.8
3.2 4.0
3.0 3.6
3.9 2.6
3.8 4.0
2.5 3.6
3.9
Scarborough
y-bar1 = 3.113
s1=0.436
Mississauga
y-bar2 = 3.438
s2=0.549

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution