The data below refers to the time in hours spent on mobile internet by sample of 10 students in a class. 39 42 47 45 32 45 37 34 33 29 assume that the population data follows a normal distribution with unknown mean and unknown standard deviation. find a 95% confidence interval estimate of μ . [33.813, 42.787] hours [35.557, 41.936] hours [34.664, 41.936] hours

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =