At western university the historical mean of scholarship examination scores for freshman applications is 900. a historical population standard deviation s=180 is assumed known each year, the assistant dean uses a sample of applications to determine whether the mean examination score for the new freshman applications has changed.
- state the hypotheses
- what is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean of xbar=935 ?
- use the confidence interval to conduct a hypthesis test. using a=.05, what is your conclusion ?
- what is the p-value ?

Meg constructed triangle poq and then used a compass and straightedge to accurately construct line segment os, as shown in the figure below, which could be the measures of angles pos and angle poq?

£100.80 divided by 14 equals 7.2 how would we put this as money

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.