To determine the average weight of carry-on luggage by passengers in airplanes, a sample of 52 pieces of carry-on luggage was weighed. The average weight was 26 pounds. Assume that we know the standard deviation of the population
to be 6 pounds.
Determine a 97% confidence interval estimate for the mean weight of the carry-on luggage. Provide the lower limit of the
confidence interval.

Look at this system of equations. -3x + 3y = 12 y = x + 4 the solution set of this system is best explained by which of these statements? a) the graphs of the equations are the same line because the equations have the same slope and the same y-intercept. the system has infinitely many solutions. b) the graphs of the equations are parallel lines because they have the same slope but different y-intercepts. the system has no solution. c) the graphs of the equations are lines that intersect at one point because the equations have the same slope but different y-intercepts. the system has exactly one solution. d) the graphs of the equations are lines that intersect at one point because the equations have the same slope and the same y-intercept. the system has exactly one solution.