Question

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).

Answer 1

Result:

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).

SPSS output:

Group Statistics
	Group	N	Mean	Std. Deviation	Std. Error Mean
Hours Spent Studying	C or higher	10	6.1000	3.07137	0.97125
	D or F	10	2.4000	1.34990	0.42687

Independent Samples Test
		Levene's Test for Equality of Variances		t-test for Equality of Means
		F	Sig.	t	df	Sig. (2-tailed)	Mean Difference	Std. Error Difference	95% Confidence Interval of the Difference
									Lower	Upper
Hours Spent Studying	Equal variances assumed	3.710	0.070	3.488	18	0.003	3.70000	1.06092	1.47109	5.92891
	Equal variances not assumed			3.488	12.352	0.004	3.70000	1.06092	1.39573	6.00427

Report:

The 10 students in the C or higher grade group (M = 6.1, SD = 3.1) and the 10 students in the D or F grade group (M = 2.4, SD = 1.3), demonstrated a significant difference in Hours Spent on Studying (t[18] = 3.49, p = .003).

OUTPUT image: