Literature review on '"Redefine the role of Higher Education Institutions in ensuring students success"

How would you present a scale proposal to a group of hypothetical PhD students?

In 2009, 250 students from North Dakota took the verbal portion of the SAT (standardized achievement test) and scored a mean of 525. Scores on this portion of the SAT are normally distributed having a mean of 500 and a standard deviation of 100.

1. Based off of hypothesis testing, how did this sample of students perform relative to the population?
2. Construct and interpret the 95% confidence interval
3. Determine the power of this finding, clearly indicating what this value tells us for this case.

colleague has told you she is interested in learning if using iPads as teaching tools will affect students’ performance on a practice standardized math test. She plans to have the students complete the practice test at the beginning and end of the third nine weeks. What type of hypothesis test would you recommend she perform? What would you tell her if she asked for a basic overview of the test and why she should use it?

Students at a nearby college often complain about assignments requiring group work. The statement “I could have done a better job by myself” is often heard. a. Explain why group work, in which everyone in the group receives the same grade, is a public good. b. Is the quality complaint heard by students consistent with what theory might suggest? c. Explain how the incentive to free-ride manifests itself in group work.

A statistician claims that the proportion of students who will vote for Mr. K to be the next president is 0.54 with the standard deviation of 0.3.

1. Identify the hypothesis test
2. If 1000 students are randomly selected and 455 of them will not vote for Mr. K, what is the P-value? What can you conclude based on 5% significant level?
3. Construct a 95% Confidence Interval
4. If Mr. K is ended up losing the election, does this make sense? Why or why not?

4. An irate student complained that the cost of his statistics textbook was too high. He randomly surveyed 37 students and found that the mean amount of money spent on statistics textbooks for these students is $122 with a standard deviation of $7.

(a) Construct a 95% confidence interval for the actual average cost of statistics textbooks.

(b) A statistics professor claims that the average cost of the textbook for her statistics class is $105. What would you tell her?

The SAT scores for US high school students are normally distributed with a mean of 1500 and a standard deviation of 100.

1. Calculate the probability that a randomly selected student has a SAT score greater than 1650.

2. Calculate the probability that a randomly selected student has a SAT score between 1400 and 1650, inclusive.

3. If we have random sample of 100 students, find the probability that the mean scores between 1485 and 1510, inclusive.

Getting a Job.

The National Association of Colleges and Employers sponsors the Graduating Students and Alumni Survey. Part of the survey gauges student optimism in landing a job after graduation. According to one year’s survey results among the 1218 respondents, 733 said they expected difficulty finding a job. a. Use the data to find and interpret a 95% confidence interval for the proportion of students who expect difficulty finding a job. b. What is the margin of error?

Among a random group of 36 students, the average time spent daily on telephone calls was found to
be 20 minutes. Assuming that the amount of time spent daily on telephone calls by a student is a
random variable with distribution N(µ; 25), calculate the confidence interval for the mean duration,
assuming a confidence level of 0.88. How many students should be interrogated, in order to obtain a
confidence interval for the mean of length not exceeding 2, with a confidence level of 0.99?