A clinical psychology student wanted to determine if there is a significant difference in the Picture Arrangement scores (a subtest of the WAIS-IV that some feel might tap right-brain processing powers) between groups of right- and left-handed college students. The scores were as follows:

1. Is there a significant difference in the Picture Arrangement scores between the right- and left-handed students? Use α = .05 in making your decision. Be sure to state your hypotheses and include the following, if necessary – test statistic, degrees of freedom, computations, critical value(s)…

2. What is the 95% confidence interval for the difference between the means?

You are interested in finding a 98% confidence interval for the average commute that non-residential students have to their college. The data below show the number of commute miles for 10 randomly selected non-residential college students. Round answers to 3 decimal places where possible.

a. To compute the confidence interval use a

distribution.

b. With 98% confidence the population mean commute for non-residential college students is between and miles.

c. If many groups of 10 randomly selected non-residential college students are surveyed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of commute miles and about percent will not contain the true population mean number of commute miles.

An instructor for a test preparation course claims that the course will improve the test scores of students. The table shows the critical reading scores for 14 students the first two times they took the test. Before taking the test for the second​ time, the students took the​ instructor's course to try to improve their critical reading test scores. At a​ = 0.01, is there enough evidence to support the​ instructor's claim? Complete parts​ (a) through​ (f). number of students:14. score on first test:474,585,482,618,330,461,638,472,547,606,577,390,473,529. Score on the second test:476,656,558,647,298,481,598,574,627,659,614,424,497,542 ​(b) Find the critical​ value(s) and identify the rejection​ region(s). c) Calculate d overbar and s Subscript d. ​(d) Use the​ t-test to find the standardized test statistic t. ​(e) Decide whether to reject or fail to reject the null hypothesis. ​(f) Interpret the decision in the context of the original claim.

Over the years, students of the University of Professional Studies, Accra (UPSA), have complained about the mode of payment of school fees and other fees. Their main concern has been that students have to go to the banking hall of the University’s bankers and queue for long hours before they can make payment. The Student Representative Council (SRC) of the University has presented a petition on this matter to the University
Council. The Council has directed the University management to take urgent steps to address the issues. The Finance Department of the University has appointed you as the lead consultant to help them address the concerns of students.
Required:
a) With the aid of a diagram, identify the existing mode of school fees payment in UPSA.
b) With the aid of diagram, make proposal of a future school fees payment system.
c) How can your new payment system facilitate quicker registration of students at the beginning of each
semester? (

Over the years, students of the University of Professional Studies, Accra (UPSA), have complained about the mode of payment of school fees and other fees. Their main concern has been that students have to go to the banking hall of the University’s bankers and queue for long hours before they can make payment. The Student Representative Council (SRC) of the University has presented a petition on this matter to the University Council. The Council has directed the University management to take urgent steps to address the issues. The Finance Department of the University has appointed you as the lead consultant to help them address the concerns of students. Required: a) With the aid of a diagram, identify the existing mode of school fees payment in UPSA. b) With the aid of diagram, make proposal of a future school fees payment system. c) How can your new payment system facilitate quicker registration of students at the beginning of each semester?

Over the years, students of the University of Professional Studies, Accra (UPSA), have complained about the mode of payment of school fees and other fees. Their main concern has been that students have to go to the banking hall of the University’s bankers and queue for long hours before they can make payment. The Student Representative Council (SRC) of the University has presented a petition on this matter to the University Council. The Council has directed the University management to take urgent steps to address the issues. The Finance Department of the University has appointed you as the lead consultant to help them address the concerns of students. Required:

a) With the aid of a diagram, identify the existing mode of school fees payment in UPSA.

b) With the aid of diagram, make proposal of a future school fees payment system.

c) How can your new payment system facilitate quicker registration of students at the beginning of each semester?

Write the results in APA format and attach your SPSS output for BOTH tests.

1. An instructor believed that the students who earn a C or higher differ in the number of hours they spend studying, compared to students who receive a D or F. She collected the following data on two independent samples of students from a class of 150 students. Course Grade Hours Spent Studying A, B, or C: 9, 5, 12, 4, 7, 5, 4, 6, 1, 8 D or F: 3, 3, 1, 4, 0, 2, 3, 1, 4, 3 Using SPSS and a = .05, conduct an appropriate statistical test. There is no data file; you must enter the data yourself. Write the results in paragraph form (5 points) and attach your SPSS output (1 point).

1. A researcher is interested in whether college students get enough sleep. She suspects that they get less than 8 hours of sleep on average. The sample mean (x¯) for 65 students was 7.08 hours. The standard deviation of number of hours students slept is s=1.8.

(a) Determine the null and alternative hypothesis for the test. What is the parameter in this study?

(b) The p-value for the test is <0.0001. Using a significance level of .05, write a one or two sentence conclusion in context of the problem.

(c) Calculate 95% confidence interval for µ, the mean number of hours college students sleep per night. Interpret the confidence interval. Be sure to use the word mean or average in your interpretation and don’t forget units. If you are doing the calculations by hand use t∗ = 1.998.

(d) Does your confidence interval support the results of the hypothesis test? Explain.

Suppose you are looking at the population of 8,000 students that are freshman at UTEP. You want to determine on average how many hours a week they work each week. Let’s call that number ?. You decide to take a sample of 100 of them.

1) How many data points are there in this space?

2) How many ways can you choose your subest of 100 students? Is it greater or less than the answer above.

3) How do you calculate the “point estimate” of one of those subsets of 100 students?

4) How many actual subsets of 100 students do you have as a researcher?

5) What does the Central Limit Theorem say about all the possible point estimates that can occur from the possible 100-student subsets? Draw a graph.

6) What value is the center of that curve? Please label it on the graph above.