Stat 503 Homework 12 (50pt) Due Wednesday, 12/10
1. Tail-feather length in birds is sometimes a sexually dimorphic trait. That is, the trait differs
substantially for males and for females. Researchers measured tail-feather length (the R1
central tail fea
Work sheet 9/8/14 -
Part I (probability tree)
Question 1: P(A|B)= To find the probability of A over the given B.
Question 2: Base on the following
Find the corresponding probabilities along the tree, p1-p8.
P1= pr1 (0.066+0.258+0.088) = 0.412
P2= pr2 (0.0
Homework 9 (50 pt) Due on Wednesday 11/5
One hundred rats whose mothers were exposed to high levels of tobacco smoke during
pregnancy were put through a simple maze. The maze required the rats to make a choice
between going left or right at the outset.
Homework 7 (50 pts)
Due Thursday 10/16
1. According to the hypothesis, sample size, and test statistic, i) find the reject region, ii) critical
value, then iii) estimate p value from the t-table, finally iv) state the conclusion for the following