7.3.5-T Question Help Use the given information to find the number of degrees of freedom, the critical values x x{ and xp, and the confidence interval estimate of o. It is reasonable to assume that simple random sample has been selected from a population with a normal distribution Nicotine in menthol cigarettes 80% confidence; n = 26, s = 0.26 mg. Click the icon to view the table of Chi-Square critical values. df = (Type a whole number.)​

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.