2. (10 points) Locate the (NELS:88) student level dataset and find the variable for Base Year Science Achievement variable (bxtxsstd). The 268 students in this dataset had a mean score of 51.97. Suppose you tested a similar group of students using the same science test, but this' group scored an average of 48. Is this difference statistically significant at a Type I error (a) of .05? Please provide a statement of the null and alternative hypotheses in symbols and words. Also provide all of the tables/figures needed to demonstrate how you arrived at your conclusion, including an assessment of the assumption of the 1-sample t-test, and all relevant output of the test itself. 3. (10 points) Locate the (NELS:88) school level dataset provided on Canvas (Under "Course Datasets" (nelschl say) and download to your local computer for use. Spend a few minutes getting to know the dataset and the variables. You are interested in seeing whether or not schools in this study experienced a significant Name: change in their reading/math composite score from the base-year (bxtxcomp) to the second year (fitxcomp). Conduct a paired samples t-test on the differences between base year reading/math achievement composite score and the second year scores for this sample of schools. What do you find? Attach all relevant output, including your investigation of assumptions of the test and the test itself. Summarize your findings in 2-3 paragraphs. Be sure to include discussions of the test statistics, p-values, and differences among groups.2. (10 points) Locate the (NELS:88) student level dataset and find the variable for Base Year Science Achievement variable (bytxsstd). The 268 students in this dataset had a mean score of 51.97. Suppose you tested a similar group of students using the same science test, but this group scored an average of 48. Is this difference statistically significant at a Type I error (a) of .05? Please provide a statement of the null and alternative hypotheses in symbols and words. Also provide all of the tables/figures needed to demonstrate how you arrived at your conclusion, including an assessment of the assumption of the 1-sample t-test, and all relevant output of the test itself. 3SPSS Statistics File Edit Vie um nelstu Q Columns Measure Role Align Width Decimals Label Values Missing Name Type Input STUDENT ID NU... 19999996, ... 6 -9 8 Right Ordinal stu_id Numeric 7 0 1 Input COMPOSITE SEX {1, MALE}... 6 - 9 8 Right Ordinal Numeric 1 0 Input N flsex 8 Right Scale 2 F1 Student Mor... None None w flstumor Numeric Input 2 Substance Abuse None None 8 Right Scale 4 flsubabu Numeric 8 Input None None 8 Right Scale 2 UT flentrl1 Numeric None None 8 Right Scale Input 6 f1entr12 Numeric 2 6 -9 8 Right Ordinal Input 7 f1s95 Numeric 0 DOES R BABYSI... ~{1, YES}... H 8 Right Ordinal Input flrace Numeric 0 COMPOSITE RA... {1, ASIAN,P... 6 - 9 Input flse Numeric 6 3 SOCIO-ECONO... 199.998, MIS... 99.998 8 Right Scale 5 2 LOCUS OF CON... 199.96, MUL... 99.96 - 99.99 8 Right Scale Input LO fllocus2 Numeric 11 f1cncpt1 Numeric 5 2 SELF-CONCEPT 1 199.96, MUL... 99.96 - 99.99 8 Right Input 2 SELF-CONCEPT 2 199.96, MUL... 99.96 - 99.99 8 Scale Input 12 f1cncpt2 Numeric Right 13 fitxrstd Numeric Right Scale Input UT 2 READING STAN... 199.96, MUL... 99.96 - 99.99 8 14 fitxmstd Numeric 2 MATH STANDA... 199.96, MUL... 99.96 - 99.99 8 Right Scale Input 15 fltxssto Numeric UT 2 SCIENCE STAN... 199.96, MUL... 99.96 - 99.99 8 Right Scale Input 16 fitxhstd Numeric UT 2 HIST/ CIT/GEO... 199.96, MUL... 99.96 - 99.99 8 Right Scale Input 17 bytxrstd Numeric 3 READING STAN... 1999.998, M... 999.998 8 Right Scale Input 18 bytxmstd Numeric 2 3 MATHEMATICS ... 1999.998, M... 999.998 Right Scale Input 19 bytxsstd Numeric 3 SCIENCE STAN... 1999.998, M... 999.998 Right Scale Input 20 bytxhatd Numeric 3 HISTORY/CIT/ ... . 1999.998, M... 999.998 8 Right Scale Input 21 newhood 1 Numeric 2 None None 8 Right Scale Input 22 newhood2 Numeric 8 None None 8 Right Scale Input 23 24 25 26
