%
% problem 241
% example 213
% 
% Written by:
% -- 
% John L. Weatherwax                2008-02-20
% 
% email: wax@alum.mit.edu
% 
% Please send comments and especially bug reports to the
% above email address.
% 
%-----

clear all; 
close all; 
clc; 


mu   = 45;
sig  = 15/sqrt(100);
xbar = 47.2; 
zobs = (xbar-mu)/sig;

pval = 1-normcdf( zobs, 0, 1 );