Question

In: Statistics and Probability

3. Business schools A and B reported the following summary of GMAT (Graduate Management Aptitude Test)...

3. Business schools A and B reported the following summary of GMAT (Graduate Management Aptitude Test) mathematics scores. Test the claim that there is a difference in means between two schools A and B. (a) At α = 1%, use the Classical approach to conclude it. (b) Using the P-value approach to conclude it. Business school A : n=50, X bar=37, S2=100 Business school B : n=40, X bar= 33, S2 = 80

Full step by step solution please, thank you

Solutions

Expert Solution

Solution:

orchestra answered 1 year ago
Next > < Previous

Related Solutions

Business Scores on the Graduate Management Association Test (GMAT) are approximately normally distributed. The mean score...
Business Scores on the Graduate Management Association Test (GMAT) are approximately normally distributed. The mean score for 2013–2015 was 552 with a standard deviation of 121. For the following exercises, find the probability that a GMAT test taker selected at ran dom earns a score in the given range, using the normal distribution as a model. (Data from: www.gmac.com.) 31. Between 540 and 700 32. Between 300 and 540 34. Less than 400 35. Greater than 750 36. Between 600...
The Graduate Management Admission Test (GMAT) is a test required for admission into many masters of...
The Graduate Management Admission Test (GMAT) is a test required for admission into many masters of business administration (MBA) programs. Total scores on the GMAT are normally distributed. The Graduate Management Admission Council, who administers the test, claims that the mean total score is 580.   Suppose a random sample of 8 students took the test, and their scores are given below. 640 610 560 610 570 680 670 560 A. Use α = .05 to test the claim that the...
The Graduate Management Admission Test (GMAT) is a test required for admission into many Master of...
The Graduate Management Admission Test (GMAT) is a test required for admission into many Master of Business Administration (MBA) programs. Total scores on the GMAT are normally distributed. The Graduate Management Admission Council, who administers the test, claims that the mean total score is 579. (Source: http://www.mba.com/.) Suppose a random sample of 8 students took the test, and their scores are given below. 699, 560, 414, 570, 521, 663, 727, 413 At the 0.05 level of significance, test the claim...
Suppose that test scores on the Graduate Management Admission Test (GMAT) are normally distributed with a...
Suppose that test scores on the Graduate Management Admission Test (GMAT) are normally distributed with a mean of 530 and standard deviation of 75. a. What GMAT score separates the highest 15% of the scores from the rest? Do not round intermediate calculations. Round your answer to the nearest whole number. GMAT score = b. What GMAT score corresponds to the 97 percentile? Do not round intermediate calculations. Round your answer to the nearest whole number. GMAT score = c....
1. The Graduate Management Admission Test (GMAT) is a test required for admission into many masters...
1. The Graduate Management Admission Test (GMAT) is a test required for admission into many masters of business administration (MBA) programs. Suppose a random sample of 8 students took the test, and their scores are given below. 699, 560, 414, 570, 521, 663, 727, 413 -Find a point estimate of the population mean -Construct and interpret a 95% confidence interval for the true mean score for the population. -How many students should be surveyed to estimate the mean score within...
1. The Graduate Management Admission Test (GMAT) is a test required for admission into many masters...
1. The Graduate Management Admission Test (GMAT) is a test required for admission into many masters of business administration (MBA) programs. Total scores on the GMAT are normally distributed and historically had a population standard deviation of 113. The Graduate Management Admission Council (GMAC), who administers the test, claims that the mean total score is 529. Suppose a random sample of 8 students took the test and their scores are given below: 699, 560, 414, 570, 521, 663, 727, 413...
The Graduate Management Admission Test (GMAT) is a standardized exam used by many universities as part...
The Graduate Management Admission Test (GMAT) is a standardized exam used by many universities as part of the assessment for admission to graduate study in business. The average GMAT score is 547 (Magoosh website, January 5, 2015). Assume that GMAT scores are bell-shaped with a standard deviation of 100 . a. What percentage of GMAT scores are 647 or higher?    b. What percentage of GMAT scores are 747 or higher (to 1 decimal)?    c. What percentage of GMAT...
The Graduate Management Admission Test (GMAT) has scores from 100 to 900. Scores are supposed to...
The Graduate Management Admission Test (GMAT) has scores from 100 to 900. Scores are supposed to follow a Normal distribution with a mean of 500 and standard deviation of 150. a. Suppose you earned a 800 on your GMAT test. From that information and the 68-95-99.7 Rule, where do you stand among all students who took the GMAT? b.Suppose you earned a 450 on your GMAT test. Where do you stand among all students who took the GMAT? c. Assuming...
Most graduate schools of business require applicants for admission to take the Graduate Management Admission Council’s...
Most graduate schools of business require applicants for admission to take the Graduate Management Admission Council’s GMAT examination. Scores on the GMAT are roughly normally distributed with a mean of 540 and a standard deviation of 125. a) What is the probability of an individual scoring above 515 on the GMA T? b) What is the probability of an individual scoring below 460 on the GMA T? c) If a sample of 36 individual are selected, find the probability that...
Students taking the Graduate Management Admissions Test (GMAT) were asked about their undergraduate major and intent...
Students taking the Graduate Management Admissions Test (GMAT) were asked about their undergraduate major and intent to pursue their MBA as a full-time or part-time student. A summary of their responses follows. Undergraduate Major Business Engineering Other Totals Intended Enrollment Full Time 423 394 75 892 Status Part Time 401 594 45 1,040 Totals 824 988 120 1,932 Develop a joint probability table for these data (to 3 decimals). Undergraduate Major Business Engineering Other Totals Intended Enrollment Full-Time Status Part-Time...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT