Open book quiz! Use the formulas, tables, and figures in your book.
The population mean grade point average for all the students at the national campus in the Fall of 2000 was m = 2.173.
A sample of n = 1133 grades attained by Pohnpeian females had a grade point average of = 2.289 with a sample standard deviation of sx = 1.311. At a significance level alpha of a = 0.05, is the Pohnpei female average statistically significantly higher than the overall national campus average?
Fall 2000 National Campus Grade Point Average Statistics
Overall
Count n of grades | Mean Grade Point Avg | Standard Deviation sx |
---|---|---|
3512 | 2.173 | 1.363 |
By State
State | Count n of grades | Mean Grade Point Avg | Standard Deviation sx |
---|---|---|---|
Chuuk | 744 | 1.906 | 1.392 |
Kosrae | 326 | 2.371 | 1.248 |
Pohnpei | 2138 | 2.238 | 1.351 |
Yap | 304 | 2.158 | 1.401 |
By State and Gender
State | Sex | Count n of grades | Mean Grade Point Avg | Standard Deviation sx |
---|---|---|---|---|
C | F | 449 | 1.993 | 1.364 |
C | M | 295 | 1.773 | 1.426 |
K | F | 143 | 2.427 | 1.259 |
K | M | 183 | 2.328 | 1.241 |
P | F | 1133 | 2.289 | 1.311 |
P | M | 1005 | 2.179 | 1.394 |
Y | F | 113 | 2.230 | 1.488 |
Y | M | 191 | 2.115 | 1.348 |