Question

A school administrator wants to test the hypothesis that the grades students anticipate receiving in their...

A school administrator wants to test the hypothesis that the grades students anticipate receiving in their classes are related to, and may help to predict, the ratings the students give to their teachers when filling out the teaching evaluations. Each of 12 randomly selected students indicated the grade he or she anticipated receiving in a course and rated the instructor of the course. The anticipated grades were transformed into numerical scores as follows: A = 4, B = 3, C = 2, D = 1, and F = 0. The rating of the instructor was made on a scale from one to five (the higher the score the more favorable the rating). Given the data that appear below (from the 12 students) determine whether anticipated grades and ratings of the instructor are significantly related to one another, and how anticipated grades might be used to predict ratings of instructors.

                      Anticipated    Rating 0f

      Students      grade          instructor

           1               3                   5

           2               0                   3

           3               2                   2                   

           4               2                   4

           5               4                   5

          6               1                    4

          7               4                    5

          8               3                    4

          9               2                    4  

         10              3                    5

         11              2                    3

         12              3                    3

a) what is the inferential statistic? (choose one)

•Two-independent-samples t test

•Related-samples t test

•One-way between-subjects ANOVA

•One-way repeated-measures (within-subjects) ANOVA

•Two-way between-subjects ANOVA

•Regression/correlation

•Chi-square test for independence

b) what are the critical value(s)

c) reject the null hypothesis(yes or no)

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

a) what is the inferential statistic

•Related-samples t test it is also called paired sample t test

The Test statistic value=5.20

The criticel value=t(0.05/2,11)=2.20

The tets statistic vale is Grater than The critical value

We reject the null hypothesis

i.e anticipated grades and ratings of the instructor are significantly related to one another

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Twenty random students are enrolled in the same course with different instructors (10 students in each...
Twenty random students are enrolled in the same course with different instructors (10 students in each class). Here are their final grades (5-point scale with ''5'' being an ''A'', etc). Calculate (and submit) the basic statistics for each class (mean, variance, std deviation) Instructor #1: 5, 5, 3, 2, 2, 2, 4, 3, 5, 1 Instructor #2: 2, 4, 4, 4, 3, 2, 5, 3, 4, 4
Overview How powerful are rumors? Frequently, students ask friends and/or look at instructor evaluations to decide...
Overview How powerful are rumors? Frequently, students ask friends and/or look at instructor evaluations to decide if a class is worth taking. Kelley (1950) found that instructor reputation has a profound impact on actual teaching ratings, and Towler and Dipboye (1998) replicated and extended this study. Subjects were randomly assigned to one of two conditions. Before viewing the lecture, students were given a summary of the instructors' prior teaching evaluations. There were two conditions: Charismatic instructor and Punitive instructor. Then...
The department of marketing  wishes to investigate whether the instruction methodology (lecture, online or hybrid) affect average...
The department of marketing  wishes to investigate whether the instruction methodology (lecture, online or hybrid) affect average student GPA.  The advanced statistical methods class is offered in all three instructional methods. Hence, the department decided to utilize this course to test their hypothesis. The department picked 5 different instructors to teach this course and  each instructor taught the course using all three methods. The average GPA of students in these classes was recorded. The department whishes to investigate if the average GPA vary...
Students completed a high school senior level standardized algebra exam. Major for students was also recorded....
Students completed a high school senior level standardized algebra exam. Major for students was also recorded. Data in terms of percent correct is recorded below for 32 students. We are interested to see if there is any difference between students' high-school algebra test scores and subsequent declared college major. These students have now also just completed the same college-level calculus class and received a grade. We are therefore now also interested to see if there is any relationship between the...
10.) Giving a test to a group of students, the grades and gender are summarized below...
10.) Giving a test to a group of students, the grades and gender are summarized below Grades and Gender A B C Total Male 16 3 9 28 Female 12 17 7 36 Total 28 20 16 64 If one student is chosen at random, find the probability that the student was female OR got an "B". Round your answer to 4 decimal places. 11.) Giving a test to a group of students, the grades and gender are summarized below....
A. A test was given to a group of students. The grades and gender are summarized...
A. A test was given to a group of students. The grades and gender are summarized below: A B C Total Male 17 16 7 40 Female 4 3 12 19 Total 21 19 19 59 Let p represent the percentage of all female students who would receive a grade of C on this test. Use a 85% confidence interval to estimate p to three decimal places. Enter your answer using decimals (not percents). B. You are performing a left-tailed...
Giving a test to a group of students, the grades and gender are summarized below A...
Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 11 12 3 26 Female 19 15 5 39 Total 30 27 8 65 If one student is chosen at random, Find Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 11 12 3 26 Female 19 15 5 39 Total 30 27 8 65 If one student is...
HW 6: z-test, t-test for independent samples, t-test for related samples, 1-way ANOVA Researchers wanted to...
HW 6: z-test, t-test for independent samples, t-test for related samples, 1-way ANOVA Researchers wanted to explore different treatment methods to effect memory skills in high school freshmen. Subjects were given a memory test (under multiple conditions) these were the results: Group 1           10,   8,   9,   11,   8,   9,   7,   6,   9,   8 Group 2           12, 10, 11,   9, 13, 8,   9, 12, 11, 11 Group 3           10,   9,   10,   9, 11, 8,   7,   9,   10,   11...
A college professor is curious if the location of a seat in class affects grades in...
A college professor is curious if the location of a seat in class affects grades in the class. They are teaching in a lecture hall with 240 students. The lecture hall has 10 rows, so they split the rows into 5 sections – Rows 1-2, Rows 3-4, Rows 5-6, Rows 7-8, and Rows 9-10. At the end of the course, they determine the top 25% of grades in the class, and if the location of the seat makes no difference,...
Determine why a hypothesis test should not be run on the following samples: A restaurant wants...
Determine why a hypothesis test should not be run on the following samples: A restaurant wants to show that its customer service rating is better than the ratings on Yelp. Currently they have 3.2 stars out of 5. A small set of survey cards are left at tables for customers to fill out and rate the service if they like. Results from 230 customers shows an average rating of 3.7 stars out of 5, with a standard deviation of 0.6...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT