Question

one group of mathematics students took a distance learning class while another group took the same...

one group of mathematics students took a distance learning class while another group took the same course in a regular classroom. the sample data is available in the table below

statistic distance . regular

Number of students . 40 50

mean scores 30.2 . 42.5

sample std dev 2.4 . 2.5

a) is there a significance difference in the mean scores? test the claim using a= 0.05 significance level

b.) construct a 95% confidence interval for the difference between the two population means

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

Homework Answers

Answer #1

Answer:-

Thanks dear student

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
One group of accounting students took a distance learning class, while another group took the same...
One group of accounting students took a distance learning class, while another group took the same course in a traditional classroom. At α = .10, is there a significant difference in the mean scores listed below? Statistic Distance Classroom Mean scores x⎯⎯1x¯1 = 9.7 x⎯⎯2x¯2 = 10.9 Sample std. dev. s1 = 2.7 s2 = 2.5 Number of students n1 = 21 n2 = 21 (a) consider following hypotheses. Assume μ1 is the mean score of distance learning and μ2...
From a random sample of 66 students in an introductory finance class that uses​ group-learning techniques,...
From a random sample of 66 students in an introductory finance class that uses​ group-learning techniques, the mean examination score was found to be 79.84 and the sample standard deviation was 2.5 For an independent random sample of 88 students in another introductory finance class that does not use​ group-learning techniques, the sample mean and standard deviation of exam scores were 73.38 and 8.5 respectively. Estimate with 95​% confidence the difference between the two population mean​ scores; do not assume...
. A certain test preparation course is designed to improve students' SAT Math scores. The students...
. A certain test preparation course is designed to improve students' SAT Math scores. The students who took the prep course have a mean SAT Math score of 504 with a standard deviation of 38.5, while the students who did not take the prep course have a mean SAT Math score of 492 with a standard deviation of 43.5. The SAT Math scores are taken for a sample of 78 students who took the prep course and a sample of...
Group Statistics Group N Mean Std. Deviation Std. Error Mean DRP Score 1 21 51.48 11.007...
Group Statistics Group N Mean Std. Deviation Std. Error Mean DRP Score 1 21 51.48 11.007 2.402 2 23 41.52 17.149 3.576 An educator conducted an experiment to test whether new directed reading activities in the classroom will help elementary school pupils improve some aspects of their reading ability. She arranged for a third grade class of 21 students to follow these activities for an 8-week period. A control classroom of 23 third graders followed the same curriculum without the...
A certain test preparation course is designed to improve students' SAT Math scores. The students who...
A certain test preparation course is designed to improve students' SAT Math scores. The students who took the prep course have a mean SAT Math score of 507 while the students who did not take the prep course have a mean SAT Math score of 501. Assume that the population standard deviation of the SAT Math scores for students who took the prep course is 45.7 and for students who did not take the prep course is 32.1 The SAT...
A certain test preparation course is designed to improve students' SAT Math scores. The students who...
A certain test preparation course is designed to improve students' SAT Math scores. The students who took the prep course have a mean SAT Math score of 507 while the students who did not take the prep course have a mean SAT Math score of 501. Assume that the population standard deviation of the SAT Math scores for students who took the prep course is 45.7 and for students who did not take the prep course is 32.1 The SAT...
Each year, all final year students take a mathematics exam. It is hypothesised that the population...
Each year, all final year students take a mathematics exam. It is hypothesised that the population mean score for this test is 105. It is known that the population standard deviation of test scores is 15. A random sample of 27 students take the exam. The mean score for this group is 111. A.) Calculate the 95% confidence interval for the population mean test score. Give your answers to 2 decimal places. _______ ≤ μ ≤ ________ B.) At a...
Kaplan is interested in determining if the average mathematics GRE score improved for students who took...
Kaplan is interested in determining if the average mathematics GRE score improved for students who took their preparation course. The GRE Math section is scored on a130-170 point scale, in 1 point increments. To conduct this study, 10 students who tookthe GRE and then retook it after taking their course were randomly picked from thepopulation. Their scores before and after are noted below: Before A. 147 B. 152 C. 155 D. 138 E. 147 F. 153 G. 151 H. 158...
The student academic group on a college campus claims that freshman students study at least 2.5...
The student academic group on a college campus claims that freshman students study at least 2.5 hours per day, on average. One Introduction to Statistics class was skeptical. The class took a random sample of 30 freshman students and found a mean study time of 137 minutes with a standard deviation of 45 minutes. If α = 0.01 (or 99% confidence level), is the student academic group’s claim correct?
A college professor wants to estimate the difference in mean test scores of students who have...
A college professor wants to estimate the difference in mean test scores of students who have taken his statistics and genetics classes in the past 10 years. He selects a random sample of 20 student records from the statistics course and a random sample of 22 student records from the genetics course. These two samples were independent random samples. The study provided the results shown in the table below. Construct a 95% confidence interval for the true difference in population...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT