.The possible scores in a mathematics placement test are in the range0-50. A Random sample of 40students was taken. The sample mean and standard Deviations were found to be 33.375 and 17.419 respectively. Contracta 95% C. Forthe population mean score?

The spotter on the ground is standing beneath the safety net. what is his distance from the base of the platform, to the nearest meter? 3 meters, 2 meters, 4 meters, 1 meter?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Aresearcher believes increased perceived control influence the well-being of residents at a nursing home. to test this , she allowed one group of residents to have control over their daily lies, (where to eat etc) . the other group of 5 residents had these deceisions made by staff. the resident's feelings of well-being were measured on a 10 point scale at the end of a one month trial period. is there a difference on well-being?