Question

A researcher is trying to determine whether there is a difference in the number of new...

A researcher is trying to determine whether there is a difference in the number of new friends that students make during their freshman year based on whether they live on or off campus. The descriptive statistics for the two groups are presented below. Conduct the appropriate hypothesis test to determine whether there is a significant difference in the number of new friends made.

On-Campus Freshmen

Off-Campus Freshmen

X1 = 4.48 s1 =1.81 N1 =16

X2 =3.61 s2 =1.86 N2 =16

Summarize the data into the appropriate test statistics. Show your work.

d. Based on your results, evaluate the null hypothesis. Circle One: Reject H0

e. State your conclusions in terms of the original research question.

f. Compute Cohen’s d and interpret the effect (i.e., is it a small, medium, or large effect)

g. Compute the upper and lower limits of the 99% confidence interval for this test.

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

Homework Answers

Answer #1

Dear student,
I am waiting for your feedback. I have given my 100% to solve your queries. If you are satisfied by my given answer. Can you please like it☺

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
A researcher is trying to determine whether there is a difference in the number of new...
A researcher is trying to determine whether there is a difference in the number of new friends that students make during their freshman year based on whether they live on or off campus. The descriptive statistics for the two groups are presented below. Conduct the appropriate hypothesis test to determine whether there is a significant difference in the number of new friends made. On-Campus Freshmen Off-Campus Freshmen X1 = 4.48 s1 =1.81 N1 =16 X2 =3.61 s2 =1.86 N2 =16...
An educational researcher wishes to know if there is a difference in academic performance for college...
An educational researcher wishes to know if there is a difference in academic performance for college freshmen that live on campus and those that commute. Data was collected from 219219 students. Can we conclude that freshman housing location and academic performance are related? Location   Average   Below Average   Above Average   Total On campus   76   41   40   157 Off campus   29   17   16   62 Total   105   58   56   219 1- the value of the test statistic. Round your answer to three decimal...
A college placement office wants to determine whether male and female economics graduates receive, on average,...
A college placement office wants to determine whether male and female economics graduates receive, on average, different salary offers for their first position after graduation. The placement officer randomly selected eight pairs of business graduates in such a sway that the qualifications, interests, and backgrounds of the members of any pair were as similar as possible. The data file Salary Pair contains the highest salary offer received by each sample member at the end of the recruiting round. Assume that...
A school psychologist wishes to determine whether a new antismoking film actually reduces the daily consumption...
A school psychologist wishes to determine whether a new antismoking film actually reduces the daily consumption of cigarettes by teenage smokers. The mean daily cigarette consumption is calculated for each of eight teenage smokers during the month before and the month after the fi lm presentation, with the following results: (Note: When deciding on the form of the alternative hypothesis, H 1 , remember that a positive difference score ( D 5 X 1 2 X 2 ) reflects a...
A researcher uses a repeated-measures design to examine the efficacy of a new Graduate Record Examination...
A researcher uses a repeated-measures design to examine the efficacy of a new Graduate Record Examination (GRE) training program on GRE test scores. A sample of n = 16 college students is obtained and each student’s performance on the GRE is measured before and after the training program. The average score increased by M = 15 points after the program with SS = 6000 for the difference scores. a.) Following the steps of a hypothesis test, first determine whether there...
To determine whether living in an off-campus residence affects an undergraduate student’s academic achievement at Longwood...
To determine whether living in an off-campus residence affects an undergraduate student’s academic achievement at Longwood University, samples of 50 on-campus residents and 50 off-campus residents were drawn randomly and independently from the Longwood undergraduate student body. The GPA for the on-campus residents had mean 2.81 and variance 0.32, while the GPA for the off-campus students had a mean of 2.72 and variance 0.45. In this problem, you will conduct a two-sample z-test to determine if the data indicates that...
A researcher would like to determine if relaxation training will affect the number of headaches for...
A researcher would like to determine if relaxation training will affect the number of headaches for chronic headache sufferers. For a week prior to training, each participant records the number of headaches suffered. Participants then receive relaxation training, and for the week following training the number of headaches is again measured. The number of headaches before and after training are provided in the table. a. Compute the appropriate mean and SS. (2 points each) b. Do the results indicate a...
  A researcher would like to determine whether an over-the-counter cold medication has an effect on mental...
  A researcher would like to determine whether an over-the-counter cold medication has an effect on mental alertness.  A sample of n = 16 participants is obtained, and each person is given a standard dose of the medication one hour before being tested in a driving simulation task.  For the general population, reaction time scores on the simulation task are normally distributed with μ = 210 and σ = 20.  The individuals in the sample had an average score of M = 222.             a....
Suppose a researcher is trying to understand whether people who purchase fast-food hamburgers would be willing...
Suppose a researcher is trying to understand whether people who purchase fast-food hamburgers would be willing to pay more if the hamburger comes with a free cookie. Prior research suggests the mean amount customers say they are willing to pay for a hamburger is μ = 3.68 and σ = 0.70. The researcher plans to conduct a study very similar to the prior research by selecting a sample of customers and asking them how much they are willing to pay...
A researcher is interested in testing whether there is a difference in mean IQ level among...
A researcher is interested in testing whether there is a difference in mean IQ level among people with varying levels of education (ED). For the ED variable, 1  =  no high school degree, 2  =  high school graduate, 3  =  college graduate. The researcher produces the following Minitab output. Use the Bonferonni method at the 3% significance level to test the hypothesis H0 :  μ1  =  μ3  vs  H1 :  μ1  ≠  μ3. --------------------------------------------------------- Descriptive Statistics: IQ ED N Mean...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT