SACJR4

For Assignment 4:

Part 1: Handwritten

Part 1. A

Three different sections of the same Interstate highway, with roughly equal traffic volumes, have been patrolled by the State Police at varying intensity levels for the past six months. The posted speed limit is 55, and the speeds of a random sample of motorists have been registered for each of the three sections. Is there any statistically significant difference in the speeds? Use the 5/6 step model as a guide, write a short paragraph interpreting your results. (I want to see all 5/6 steps and descriptive statistics in your interpretation. Make sure to show all work.)

Lightly Patrolled	Moderately Patrolled	Heavily Patrolled
55	57	50
48	58	51
58	58	60
65	55	58
72	55	55
67	59	52
54	58	55
65	54	55

Part 1. B

The city council is considering a law prohibiting smoking in all public facilities. A sample has been selected from the community and tested for support of the ordinance. Is there a statistically significant relationship between age and support for the anti-smoking law? Use the 5/6 step model as a guide, write a short paragraph interpreting your results. (I want to see all 5/6 steps and descriptive statistics in your interpretation. Make sure to show all work)

		Age
		Less than 40	More than 40
Support:	For	145	78	223
	Against	103	169	272
		248	247	495

Please submit your answers to part 1 via a word document and any handwritten work that needs to be shown via a PDF to the assignment folder.

Part 2. Part two is an SPSS assignment.

Using the SPSS data set created for the first assignment, test the following hypothesis using the 5/6-step module as a guide and write a short paragraph about your findings for each hypothesis. Finally, please submit your answers for each question (showing all 5/6 steps) via a word document and copy your SPSS output for each hypothesis via an SPSS file. (It can be assumed that the data meet the assumptions of random sampling, independence, and a normal distribution. If other assumptions are violated, you will need to recode to meet assumptions.)

Test the following hypothesis:

· The sample population's GPA is significantly lower than the national average.

· (National average= 2.5)

· There is a significant difference between race and people's feelings about legalizing marijuana.

· (Hint: To meet assumptions, you must recode the variables. So please remember to always recode into a new variable.)

· There is a significant difference in the number of partners between males and females.

· There is not a significant difference between race and age when Freshman.

· If there is a significant difference, which race significantly differs from the others? Why is this important?

Please submit your answers to the assignment folder by the end of the learning module. Assignments scoring above a 30% Turnitin.com rating are subject to a point reduction. Assignments scoring above a 40% Trunitin.com rating will receive a zero on the assignment for originality, not for plagiarism. Keep direct quotes to a minimum.

Make sure to use APA format for in-text citations and references.