(co 4) in a sample of 8 high school students, they spent an average of 24.8 hours each week doing sports with a sample standard deviation of 3.2 hours. find the 95% confidence interval, assuming the times are normally distributed.
(21.60, 28.00)
(22.12, 27.48)
(22.66, 26.94)
(24.10, 25.50)

Can someone me out here and the tell me the greatest common factor

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Agroup of randomly selected apple valley high school students were asked to pick their favorite gym class. the table below shows the results of the survey. there are 528 students at apple valley high school. gym class number of students racquet sports 1 team sports 9 track and field 17 bowling 13 based on the data, what is the most reasonable estimate for the number of students at apple valley high school whose favorite gym class is bowling? choose 1 answer a. 9 b. 13 c. 119 d. 172