Drishti has been completing 'medium level' Sudoku puzzles every day for some time, and is keen to know if her average completion time is faster than that of other 'puzzlers'. An internet source shows that the average time to complete a 'medium level' Sudoku puzzle is 20.2 minutes. For the next month, Drishti records the time she takes to complete each 'medium level' puzzle. What research design has been used here? v' [Select] Observational within subjects design Experimental between subjects design Observational matched subject design Experimental within subjects design Experimental matched subject design Observational between subjects design test if the average time Drishti takes to complete a s than 20.2 minutes? Drishti has been completing 'medium level' Sudoku puzzles every day for some time, and is keen to know if her average completion time is faster than that of other 'puzzlers'. An internet source shows that the average time to complete a 'medium level' Sudoku puzzle is 20.2 minutes. For the next month, Drishti records the time she takes to complete each 'medium level' puzzle. What research design has been used here? [ Select ] v What analysis would be required to test if the average time Drishti takes to complete a 'medium level' Sudoku puzzle is less than 20.2 minutes? J [Select] Onesample t-test Independent samples t-test Pearson's correlation coefficient] Regression analysis Paired samples ttest Binomial Test Cross-tabulation I Chi-Square test