#################
# QERM 598		#
# HW 3			#
# due 1.29.2007	#
#################

# 1.  Modify the t-test power example to compute the power for 
# some other t-tests with different values of n, sigma^2,
# mu.1 and mu.2.  Throughout, assume alpha = .05 and use
# a two sided test.  
#
# Specifically, consider all combinations of n = 3,5,10,20
# mu.1-mu.2 = 1,3,5, (i.e. pick two means that are 1, 3 and 5 apart;
# 	the actual values of mu.1 and mu.2 shouldn't matter.)
# and sigma^2 = 1,2,5.
#
# 2.  Read the nonparametric_tests.pdf notes on the webpage.
# Use R to conduct the Adelie/Chinstrap penguin example found in the notes.
#
# 3.  Apply the Wilcoxon Signed Rank test to the boys shoe
# data example given in lab.  Does your inference agree with the
# paired-sample t-test?
# Use the following
?wilcox.test	# now look at the paired=T option.
#
# 4.  Use R to illustrate a current or past HW problem from Stat 512-513.
# Be prepared to discuss this problem for 5 minutes at the next meeting.