Adata set includes 106 body temperatures of healthy adult humans having a mean of 98.9 degrees f and a standard deviation of 0.62 degrees f. construct a 99 % confidence interval estimate of the mean body temperature of all healthy humans. what does the sample suggest about the use of 98.6 degrees f as the mean body temperature? what is the confidence interval estimate of the population mean? round to three decimal places as needed.

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.