Question

The Admissions officer for the graduate programs at Michigan State University (MSU) believes that the average...

The Admissions officer for the graduate programs at Michigan State University (MSU) believes that the average score on the GRE exam at his university is significantly higher than the national average of 1300. Assume that the population standard deviation is 125 and a random sample of 25 scores had an average of 1375.

a) State the appropriate null and alternative hypotheses.

b) Conduct the test with 5% significant level, and explain your conclusion.

Please show calculations. Thank you.

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

Homework Answers

Answer #1


Let me know in the comment section if anything is not clear. I will reply ASAP!
If you liked the answer, please give an upvote. This will be quite encouraging for me.Thank-you!

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
BACKGROUND: According to the Educational Testing Service (ETS), the national average on the Graduate Record Examinations...
BACKGROUND: According to the Educational Testing Service (ETS), the national average on the Graduate Record Examinations (GRE), a standardized test that is an admissions requirement for most graduate schools in the United States, is 302.60 (with the verbal and quantitative subsections combined). Unfortunately, ETS does not provide a standard deviation for total GRE score (only standard deviations for the two subsections), so let’s just use a standard deviation of 12. Pretend the ETS revises the current GRE test (the one...
BACKGROUND: According to the Educational Testing Service (ETS), the national average on the Graduate Record Examinations...
BACKGROUND: According to the Educational Testing Service (ETS), the national average on the Graduate Record Examinations (GRE), a standardized test that is an admissions requirement for most graduate schools in the United States, is 302.60 (with the verbal and quantitative subsections combined). Unfortunately, ETS does not provide a standard deviation for total GRE score (only standard deviations for the two subsections), so let’s just use a standard deviation of 12. PROBLEM (FICTIONAL): ETS has received number complaints from universities that...
A college admissions officer states that the average ACT score for incoming freshmen at her school...
A college admissions officer states that the average ACT score for incoming freshmen at her school is no more than 22 and that standard deviation for ACT scores is 4 points. A sample of 36 incoming freshmen reveals an average ACT score of 23.5. State the null and alternative hypotheses concerning this claim and test the hypothesis at the 99% confidence level using the P-value. Is the officer's statement correct, based on this sample information and your test?
5) A researcher at the University of Michigan medical school believes that coffee consumption may increase...
5) A researcher at the University of Michigan medical school believes that coffee consumption may increase heart rate. Suppose it is known that heart rate (in beats per minute) is normally distributed with an average of 70 bpm for adults. A random sample of 24 adults was selected and it was found that their average heartbeat was 73 bpm after coffee consumption, with a standard deviation of 7 bpm. Is there any evidence to support the researcher’s belief at 2.5%...
For questions 1 through 3 state the proper t-test (one sample, paired samples, independent samples) that...
For questions 1 through 3 state the proper t-test (one sample, paired samples, independent samples) that should be used to evaluate the research question: (*Just state the test) 1) A developmental psychologist wants to determine if a recently created computer training program can increase the working memory ability of high-school students. A sample of 40 students are given the reverse digit span test at the beginning of the school year and then again after 4 weeks of training. Are there...
Administrators at a state University want to evaluate whether or not their applicants are substantially different...
Administrators at a state University want to evaluate whether or not their applicants are substantially different from those of the general population on the GRE (u = 1000, Std dev = 100). A sample of 50 applicants yields an average GRE score of 1035 with a standard deviation of 98.5. Conduct a hypothesis test using alpha = .05 (rejection criterion). When determining the probability value for the study, pay close attention to whether this a one or two tailed hypothesis...
David Anderson has been working as a lecturer at Michigan State University for the last three...
David Anderson has been working as a lecturer at Michigan State University for the last three years. He teaches two large sections of introductory accounting every semester. While he uses the same lecture notes in both sections, his students in the first section outperform those in the second section. He believes that students in the first section not only tend to get higher scores, they also tend to have lower variability in scores. David decides to carry out a formal...
A student at a university wants to determine if the proportion of students that use iPhones...
A student at a university wants to determine if the proportion of students that use iPhones is less than 0.33. The hypotheses for this scenario are as follows. Null Hypothesis: p ≥ 0.33, Alternative Hypothesis: p < 0.33. If the student takes a random sample of students and calculates a p-value of 0.0466 based on the data, what is the appropriate conclusion? Conclude at the 5% level of significance. 1) The proportion of students that use iPhones is greater than...
The Graduate Management Admission Test (GMAT) is taken by individuals interested in pursuing graduate management education....
The Graduate Management Admission Test (GMAT) is taken by individuals interested in pursuing graduate management education. GMAT scores are used as part of the admissions process for more than 6100 graduate management programs worldwide. The mean sore for all test?takers is 550 with a standard deviation of 120. A researcher in the Philippines is concerned about the performance of undergraduates in the Philippines on the GMAT. She believes that the mean scores for this year's college seniors in the Philippines...
Please answer both!! Suppose the national average dollar amount for an automobile insurance claim is $805.66....
Please answer both!! Suppose the national average dollar amount for an automobile insurance claim is $805.66. You work for an agency in Michigan and you are interested in whether or not the state average is less than the national average. The hypotheses for this scenario are as follows: Null Hypothesis: μ ≥ 805.66, Alternative Hypothesis: μ < 805.66. You take a random sample of claims and calculate a p-value of 0.02 based on the data, what is the appropriate conclusion?...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT